59 files changed, 557 insertions, 597 deletions

diff --git a/browser/themes/windows/Info-XP.png b/browser/themes/windows/Info-XP.png
deleted file mode 100644
index c20f66ce6..000000000
--- a/browser/themes/windows/Info-XP.png
+++ /dev/null
diff --git a/browser/themes/windows/Privacy-16-XP.png b/browser/themes/windows/Privacy-16-XP.png
deleted file mode 100644
index 335febbb3..000000000
--- a/browser/themes/windows/Privacy-16-XP.png
+++ /dev/null
diff --git a/browser/themes/windows/Toolbar-XP.png b/browser/themes/windows/Toolbar-XP.png
deleted file mode 100644
index dff60911f..000000000
--- a/browser/themes/windows/Toolbar-XP.png
+++ /dev/null
diff --git a/browser/themes/windows/Toolbar-lunaSilver.png b/browser/themes/windows/Toolbar-lunaSilver.png
deleted file mode 100644
index 30c425c26..000000000
--- a/browser/themes/windows/Toolbar-lunaSilver.png
+++ /dev/null
diff --git a/browser/themes/windows/Toolbar-aero.png b/browser/themes/windows/Toolbar-win7.png
index b191ce2aa..b191ce2aa 100644
--- a/browser/themes/windows/Toolbar-aero.png
+++ b/browser/themes/windows/Toolbar-win7.png
diff --git a/browser/themes/windows/Toolbar-aero@2x.png b/browser/themes/windows/Toolbar-win7@2x.png
index 033d87dff..033d87dff 100644
--- a/browser/themes/windows/Toolbar-aero@2x.png
+++ b/browser/themes/windows/Toolbar-win7@2x.png
diff --git a/browser/themes/windows/actionicon-tab-XPVista7.png b/browser/themes/windows/actionicon-tab-win7.png
index 8437c7655..8437c7655 100644
--- a/browser/themes/windows/actionicon-tab-XPVista7.png
+++ b/browser/themes/windows/actionicon-tab-win7.png
diff --git a/browser/themes/windows/browser-aero.css b/browser/themes/windows/browser-aero.css
index 5ff9d8250..dbac6bb7a 100644
--- a/browser/themes/windows/browser-aero.css
+++ b/browser/themes/windows/browser-aero.css
@@ -46,8 +46,7 @@
     color: graytext;
   }
 
-  @media (-moz-os-version: windows-vista),
-         (-moz-os-version: windows-win7) {
+  @media (-moz-os-version: windows-win7) {
     .sidebar-header:not(:-moz-lwtheme),
     #sidebar-header:not(:-moz-lwtheme) {
       background-color: #EEF3FA;
@@ -83,190 +82,353 @@
     -moz-appearance: -moz-win-exclude-glass;
   }
 
-  @media not all and (-moz-os-version: windows-vista) {
-    @media not all and (-moz-os-version: windows-win7) {
-      @media not all and (-moz-os-version: windows-win8) {
-        @media (-moz-windows-default-theme) {
-          #main-window {
-            background-color: hsl(0, 0%, 78%);
-          }
-
-          :root[tabsintitlebar] .tab-label:-moz-window-inactive {
-            /* Calculated to match the opacity change of Windows Explorer
-               titlebar text change for inactive windows. */
-            opacity: .6;
-          }
-        }
+  @media (-moz-os-version: windows-win10) {
+    /* Draw XUL caption buttons and background on Windows 10 */
+    @media (-moz-windows-default-theme) {
+      #main-window {
+        background-color: hsl(0, 0%, 78%);
+      }
 
-        @media not all and (-moz-windows-default-theme) {
-          #main-window {
-            background-color: transparent;
-          }
-        }
+      :root[tabsintitlebar] .tab-label:-moz-window-inactive {
+        /* Calculated to match the opacity change of Windows Explorer
+           titlebar text change for inactive windows. */
+        opacity: .6;
+      }
+    }
 
-        #titlebar-buttonbox,
-        .titlebar-button {
-          -moz-appearance: none !important;
-        }
+    @media not all and (-moz-windows-accent-color-applies) {
+      /* Default styling for when no accent color is applied */
+      #main-window:not(:-moz-window-inactive):not(:-moz-lwtheme) {
+        background-color: hsl(235, 33%, 19%);
+      }
+      
+      :root:not(:-moz-window-inactive):not(:-moz-lwtheme) {
+        --titlebar-text-color: white;
+      }
+      
+      #titlebar-min:not(:-moz-window-inactive):not(:-moz-lwtheme) {
+        list-style-image: url(chrome://browser/skin/caption-buttons.svg#minimize-highlight);
+      }
 
-        .titlebar-button {
-          border: none;
-          margin: 0 !important;
-          padding: 10px 17px;
-        }
+      #titlebar-max:not(:-moz-window-inactive):not(:-moz-lwtheme) {
+        list-style-image: url(chrome://browser/skin/caption-buttons.svg#maximize-highlight);
+      }
 
-        #main-window[sizemode=maximized] .titlebar-button {
-          padding-top: 8px;
-          padding-bottom: 8px;
-        }
+      #main-window[sizemode="maximized"] #titlebar-max:not(:-moz-window-inactive):not(:-moz-lwtheme) {
+        list-style-image: url(chrome://browser/skin/caption-buttons.svg#restore-highlight);
+      }
+      
+      #titlebar-close:not(:-moz-window-inactive):not(:-moz-lwtheme) {
+        list-style-image: url(chrome://browser/skin/caption-buttons.svg#close-highlight);
+      }
 
-        .titlebar-button > .toolbarbutton-icon {
-          width: 12px;
-          height: 12px;
-        }
+      .titlebar-button:not(#titlebar-close):not(:-moz-window-inactive):not(:-moz-lwtheme):hover {
+        background-color: hsla(0, 0%, 100%, .17);
+      }
+
+      .titlebar-button:not(#titlebar-close):not(:-moz-window-inactive):not(:-moz-lwtheme):hover:active	{
+        background-color: hsla(0, 0%, 100%, .27);
+        transition: none;
+      }
+      
+      #titlebar-close:not(:-moz-window-inactive):not(:-moz-lwtheme):hover {
+        background-color: hsla(0, 86%, 49%, 1);
+      }
+
+      #titlebar-close:not(:-moz-window-inactive):not(:-moz-lwtheme):hover:active	{
+        background-color: hsla(0, 60%, 39%, 1);
+        transition: none;
+      }
+    }
+
+    @media (-moz-windows-accent-color-applies) { 
+      /* Styling for when an accent color is applied to the titlebar */
+      #main-window:not(:-moz-window-inactive):not(:-moz-lwtheme) {
+        background-color: -moz-win-accentcolor;
+      }
+      
+      :root:not(:-moz-window-inactive):not(:-moz-lwtheme) {
+        --titlebar-text-color: -moz-win-accentcolortext;
+      }
+      
+      #titlebar-min {
+        list-style-image: url(chrome://browser/skin/caption-buttons.svg#minimize);
+      }
+
+      #titlebar-max {
+        list-style-image: url(chrome://browser/skin/caption-buttons.svg#maximize);
+      }
+
+      #main-window[sizemode="maximized"] #titlebar-max {
+        list-style-image: url(chrome://browser/skin/caption-buttons.svg#restore);
+      }
+
+      #titlebar-close {
+        list-style-image: url(chrome://browser/skin/caption-buttons.svg#close);
+      }
+      
+      .titlebar-button:hover {
+        background-color: hsla(0, 0%, 0%, .17);
+      }
 
+      .titlebar-button:hover:active {
+        background-color: hsla(0, 0%, 0%, .27);
+        transition: none;
+      }
+      
+      @media (-moz-windows-accent-color-is-dark) {
+        /* dark accent color */
         #titlebar-min {
-          list-style-image: url(chrome://browser/skin/caption-buttons.svg#minimize);
+          list-style-image: url(chrome://browser/skin/caption-buttons.svg#minimize-highlight);
         }
 
         #titlebar-max {
-          list-style-image: url(chrome://browser/skin/caption-buttons.svg#maximize);
+          list-style-image: url(chrome://browser/skin/caption-buttons.svg#maximize-highlight);
         }
 
         #main-window[sizemode="maximized"] #titlebar-max {
-          list-style-image: url(chrome://browser/skin/caption-buttons.svg#restore);
+          list-style-image: url(chrome://browser/skin/caption-buttons.svg#restore-highlight);
         }
 
         #titlebar-close {
-          list-style-image: url(chrome://browser/skin/caption-buttons.svg#close);
-        }
-        #titlebar-close:hover {
-          list-style-image: url(chrome://browser/skin/caption-buttons.svg#close-white);
+          list-style-image: url(chrome://browser/skin/caption-buttons.svg#close-highlight);
         }
-
-        #titlebar-min:-moz-lwtheme {
-          list-style-image: url(chrome://browser/skin/caption-buttons.svg#minimize-themes);
+      
+        .titlebar-button:not(#titlebar-close):not(:-moz-window-inactive):not(:-moz-lwtheme):hover {
+          background-color: hsla(0, 0%, 100%, .17);
         }
-        #titlebar-max:-moz-lwtheme {
-          list-style-image: url(chrome://browser/skin/caption-buttons.svg#maximize-themes);
+        .titlebar-button:not(#titlebar-close):not(:-moz-window-inactive):not(:-moz-lwtheme):hover:active	{
+          background-color: hsla(0, 0%, 100%, .27);
+          transition: none;
         }
-        #main-window[sizemode="maximized"] #titlebar-max:-moz-lwtheme {
-          list-style-image: url(chrome://browser/skin/caption-buttons.svg#restore-themes);
+      
+        #titlebar-close:not(:-moz-window-inactive):not(:-moz-lwtheme):hover {
+          background-color: hsla(0, 86%, 49%, 1);
         }
-        #titlebar-close:-moz-lwtheme {
-          list-style-image: url(chrome://browser/skin/caption-buttons.svg#close-themes);
+
+        #titlebar-close:not(:-moz-window-inactive):not(:-moz-lwtheme):hover:active	{
+          background-color: hsla(0, 60%, 39%, 1);
+          transition: none;
         }
+      }
+    } /* Windows 10 accent color applies */
 
+    @media not all and (-moz-windows-default-theme) {
+      #main-window {
+        background-color: transparent;
+      }
+    }
 
-        /* the 12px image renders a 10px icon, and the 10px upscaled gets rounded to 12.5, which
-         * rounds up to 13px, which makes the icon one pixel too big on 1.25dppx. Fix: */
-        @media (min-resolution: 1.20dppx) and (max-resolution: 1.45dppx) {
-          .titlebar-button > .toolbarbutton-icon {
-            width: 11.5px;
-            height: 11.5px;
-          }
-        }
+    #titlebar-buttonbox,
+    .titlebar-button {
+      -moz-appearance: none !important;
+    }
 
-        /* 175% dpi should result in the same device pixel sizes as 150% dpi. */
-        @media (min-resolution: 1.70dppx) and (max-resolution: 1.95dppx) {
-          .titlebar-button {
-            padding-left: 14.1px;
-            padding-right: 14.1px;
-          }
-
-          .titlebar-button > .toolbarbutton-icon {
-            width: 10.8px;
-            height: 10.8px;
-          }
-        }
+    .titlebar-button {
+      border: none;
+      margin: 0 !important;
+      padding: 9px 17px;
+      transition: background-color linear 120ms;
+    }
+        
+    #main-window[sizemode="maximized"][tabsontop=true] #tabbrowser-tabs {
+      min-height: 28px;
+    }
 
-        /* 225% dpi should result in the same device pixel sizes as 200% dpi. */
-        @media (min-resolution: 2.20dppx) and (max-resolution: 2.45dppx) {
-          .titlebar-button {
-            padding-left: 15.3333px;
-            padding-right: 15.3333px;
-          }
-
-          .titlebar-button > .toolbarbutton-icon {
-            width: 10.8px;
-            height: 10.8px;
-          }
-        }
+    #main-window[sizemode=maximized] .titlebar-button {
+      padding-top: 8px;
+      padding-bottom: 8px;
+    }
 
-        /* 275% dpi should result in the same device pixel sizes as 250% dpi. */
-        @media (min-resolution: 2.70dppx) and (max-resolution: 2.95dppx) {
-          /* NB: todo: this should also change padding on the buttons
-           * themselves, but without a device to test this on, it's
-           * impossible to know by how much. */
-          .titlebar-button > .toolbarbutton-icon {
-            width: 10.8px;
-            height: 10.8px;
-          }
-        }
+    .titlebar-button > .toolbarbutton-icon {
+      width: 12px;
+      height: 12px;
+    }
 
-        @media (-moz-windows-default-theme) {
-          .titlebar-button:hover {
-            background-color: hsla(0, 0%, 0%, .12);
-          }
+    .titlebar-button:not(:hover) > .toolbarbutton-icon:-moz-window-inactive {
+      opacity: 0.5;
+    }
 
-          .titlebar-button:hover:active {
-            background-color: hsla(0, 0%, 0%, .22);
-          }
+    #main-window[chromemargin^="0,"][sizemode=normal] #navigator-toolbox {
+      margin-top: -4px;
+    }
 
-          .titlebar-button:not(:hover) > .toolbarbutton-icon:-moz-window-inactive {
-            opacity: 0.5;
-          }
+    #main-window[sizemode="maximized"] #titlebar-close {
+      padding-right: 19px;
+    }
+    
+    #titlebar-close:hover {
+      list-style-image: url(chrome://browser/skin/caption-buttons.svg#close-highlight);
+      background-color: hsla(0, 86%, 49%, 1);
+    }
 
-          #titlebar-close:hover {
-            background-color: hsl(355, 86%, 49%);
-          }
+    #titlebar-close:hover:active {
+      background-color: hsla(0, 86%, 49%, 0.6);
+      transition: none;
+    }
+    
+    /* inactive window */
 
-          #titlebar-close:hover:active {
-            background-color: hsl(355, 82%, 69%);
-          }
-        }
-        @media not all and (-moz-windows-default-theme) {
-          .titlebar-button {
-            background-color: -moz-field;
-          }
-          .titlebar-button:hover {
-            background-color: Highlight;
-          }
-
-          #titlebar-min {
-            list-style-image: url(chrome://browser/skin/caption-buttons.svg#minimize-highcontrast);
-          }
-          #titlebar-min:hover {
-            list-style-image: url(chrome://browser/skin/caption-buttons.svg#minimize-highcontrast-hover);
-          }
-
-          #titlebar-max {
-            list-style-image: url(chrome://browser/skin/caption-buttons.svg#maximize-highcontrast);
-          }
-          #titlebar-max:hover {
-            list-style-image: url(chrome://browser/skin/caption-buttons.svg#maximize-highcontrast-hover);
-          }
-
-          #main-window[sizemode="maximized"] #titlebar-max {
-            list-style-image: url(chrome://browser/skin/caption-buttons.svg#restore-highcontrast);
-          }
-          #main-window[sizemode="maximized"] #titlebar-max:hover {
-            list-style-image: url(chrome://browser/skin/caption-buttons.svg#restore-highcontrast-hover);
-          }
-
-          #titlebar-close {
-            list-style-image: url(chrome://browser/skin/caption-buttons.svg#close-highcontrast);
-          }
-          #titlebar-close:hover {
-            list-style-image: url(chrome://browser/skin/caption-buttons.svg#close-highcontrast-hover);
-          }
-        }
+    #titlebar-min:-moz-window-inactive:not(:-moz-lwtheme) {
+      list-style-image: url(chrome://browser/skin/caption-buttons.svg#minimize);
+    }
+
+    #titlebar-max:-moz-window-inactive:not(:-moz-lwtheme) {
+      list-style-image: url(chrome://browser/skin/caption-buttons.svg#maximize);
+    }
+
+    #main-window[sizemode="maximized"] #titlebar-max:-moz-window-inactive:not(:-moz-lwtheme) {
+      list-style-image: url(chrome://browser/skin/caption-buttons.svg#restore);
+    }
+
+    #titlebar-close:-moz-window-inactive:not(:-moz-lwtheme):not(:hover) {
+      list-style-image: url(chrome://browser/skin/caption-buttons.svg#close);
+    }
+    
+    .titlebar-button:-moz-window-inactive:not(:-moz-lwtheme):hover {
+      background-color: hsla(0, 0%, 0%, .17);
+    }
+
+    .titlebar-button:-moz-window-inactive:not(:-moz-lwtheme):hover:active {
+      background-color: hsla(0, 0%, 0%, .27);
+      transition: none;
+    }
+    
+    /* light persona */
+    
+    .titlebar-button:-moz-lwtheme-darktext:hover {
+      background-color: hsla(0, 0%, 0%, .17);
+    }
+
+   .titlebar-button:-moz-lwtheme-darktext:hover:active {
+      background-color: hsla(0, 0%, 0%, .27);
+      transition: none;
+    }
+    
+    #titlebar-min:-moz-lwtheme-darktext {
+      list-style-image: url(chrome://browser/skin/caption-buttons.svg#minimize-outline);
+    }
+
+    #titlebar-max:-moz-lwtheme-darktext {
+      list-style-image: url(chrome://browser/skin/caption-buttons.svg#maximize-outline);
+    }
+
+    #main-window[sizemode="maximized"]:-moz-lwtheme-darktext #titlebar-max:-moz-lwtheme-darktext {
+      list-style-image: url(chrome://browser/skin/caption-buttons.svg#restore-outline);
+    }
+
+    #titlebar-close:-moz-lwtheme-darktext {
+      list-style-image: url(chrome://browser/skin/caption-buttons.svg#close-outline);
+    }
+    #titlebar-close:hover:-moz-lwtheme-darktext {
+      list-style-image: url(chrome://browser/skin/caption-buttons.svg#close-outline);
+    }
+        
+    /* dark persona */
+    
+    .titlebar-button:-moz-lwtheme-brighttext:hover {
+      background-color: hsla(0, 0%, 100%, .27);
+    }
+
+    .titlebar-button:-moz-lwtheme-brighttext:hover:active {
+      background-color: hsla(0, 0%, 100%, .37);
+      transition: none;
+    }
+    
+    #titlebar-min:-moz-lwtheme-brighttext {
+      list-style-image: url(chrome://browser/skin/caption-buttons.svg#minimize-outline-inverted);
+    }
+
+    #titlebar-max:-moz-lwtheme-brighttext {
+      list-style-image: url(chrome://browser/skin/caption-buttons.svg#maximize-outline-inverted);
+    }
+
+    #main-window[sizemode="maximized"]:-moz-lwtheme-brighttext #titlebar-max:-moz-lwtheme-brighttext {
+      list-style-image: url(chrome://browser/skin/caption-buttons.svg#restore-outline-inverted);
+    }
+
+    #titlebar-close:-moz-lwtheme-brighttext {
+      list-style-image: url(chrome://browser/skin/caption-buttons.svg#close-outline-inverted);
+    }
+    #titlebar-close:hover:-moz-lwtheme-brighttext {
+      list-style-image: url(chrome://browser/skin/caption-buttons.svg#close-outline-inverted);
+    }
+
+    /* the 12px image renders a 10px icon, and the 10px upscaled gets rounded to 12.5, which
+     * rounds up to 13px, which makes the icon one pixel too big on 1.25dppx. Fix: */
+    @media (min-resolution: 1.20dppx) and (max-resolution: 1.45dppx) {
+      .titlebar-button > .toolbarbutton-icon {
+        width: 11.5px;
+        height: 11.5px;
       }
     }
-  }
+     
+    /* 175% dpi should result in the same device pixel sizes as 150% dpi. */
+    @media (min-resolution: 1.70dppx) and (max-resolution: 1.95dppx) {
+      .titlebar-button {
+        padding-left: 14.1px;
+        padding-right: 14.1px;
+      }
+      .titlebar-button > .toolbarbutton-icon {
+        width: 10.8px;
+        height: 10.8px;
+      }
+    }
+
+    /* 225% dpi should result in the same device pixel sizes as 200% dpi. */
+    @media (min-resolution: 2.20dppx) and (max-resolution: 2.45dppx) {
+      .titlebar-button {
+        padding-left: 15.3333px;
+        padding-right: 15.3333px;
+      }
+      .titlebar-button > .toolbarbutton-icon {
+        width: 10.8px;
+        height: 10.8px;
+      }
+    }
+
+    /* 275% dpi should result in the same device pixel sizes as 250% dpi. */
+    @media (min-resolution: 2.70dppx) and (max-resolution: 2.95dppx) {
+      /* NB: todo: this should also change padding on the buttons
+       * themselves, but without a device to test this on, it's
+       * impossible to know by how much. */
+      .titlebar-button > .toolbarbutton-icon {
+        width: 10.8px;
+        height: 10.8px;
+      }
+    }
+    
+     
+    @media not all and (-moz-windows-default-theme) {
+      .titlebar-button {
+        background-color: -moz-field;
+      }
+      .titlebar-button:hover {
+        background-color: Highlight;
+      }
 
-  @media (-moz-os-version: windows-vista),
-         (-moz-os-version: windows-win7),
+      #titlebar-min {
+        list-style-image: url(chrome://browser/skin/caption-buttons.svg#minimize-outine-inverted);
+      }
+
+      #titlebar-max {
+        list-style-image: url(chrome://browser/skin/caption-buttons.svg#maximize-outine-inverted);
+      }
+
+      #main-window[sizemode="maximized"] #titlebar-max {
+        list-style-image: url(chrome://browser/skin/caption-buttons.svg#restore-outine-inverted);
+      }
+
+      #titlebar-close {
+        list-style-image: url(chrome://browser/skin/caption-buttons.svg#close-outine-inverted);
+      }
+      #titlebar-close:hover {
+        list-style-image: url(chrome://browser/skin/caption-buttons.svg#close-outine-inverted);
+      }
+    }
+  } /* Win 10 styling */
+
+  @media (-moz-os-version: windows-win7),
          (-moz-os-version: windows-win8) {
     #main-window[sizemode="maximized"] #titlebar-buttonbox {
       margin-inline-end: 3px;
@@ -283,7 +445,7 @@
     }
 
     /* The borders on the glass frame are ours, and inside #browser, and on
-     * vista and win7 we want to make sure they are "glassy", so we can't use
+     * win7 we want to make sure they are "glassy", so we can't use
      * #browser as the exclude-glass container. We use #appcontent instead. */
     #browser {
       -moz-appearance: none;
@@ -296,18 +458,13 @@
 
   @media (-moz-os-version: windows-win8) {
     /* Artificially draw window borders that are covered by lwtheme, see bug 591930.
-     * Borders for vista/win7 are below, win10 doesn't need them. */
+     * Borders for win7 are below, win10 doesn't need them. */
     #main-window[sizemode="normal"] > #tab-view-deck > #browser-panel:-moz-lwtheme {
       border-top: 1px solid @toolbarShadowColor@;
     }
   }
 
   @media (-moz-windows-default-theme) {
-    #toolbar-menubar:not(:-moz-lwtheme),
-    #TabsToolbar:not(:-moz-lwtheme) {
-      color: black;
-    }
-
     #main-menubar > menu:not(:-moz-lwtheme) {
       color: inherit;
     }
@@ -316,11 +473,9 @@
      * On aero, the menubar fog disappears for inactive windows, and renders gray
      * illegible.
      */
-    @media not all and (-moz-os-version: windows-vista) {
-      @media not all and (-moz-os-version: windows-win7) {
-        #toolbar-menubar:not(:-moz-lwtheme):-moz-window-inactive {
-          color: ThreeDShadow;
-        }
+    @media not all and (-moz-os-version: windows-win7) {
+      #toolbar-menubar:not(:-moz-lwtheme):-moz-window-inactive {
+        color: ThreeDShadow;
       }
     }
   }
@@ -330,9 +485,8 @@
     color: white;
   }
 
-  /* Show borders on vista through win8, but not on win10 and later: */
-  @media (-moz-os-version: windows-vista),
-         (-moz-os-version: windows-win7),
+  /* Show borders on win7 and win8, but not on win10 and later: */
+  @media (-moz-os-version: windows-win7),
          (-moz-os-version: windows-win8) {
     /* Vertical toolbar border */
     #main-window:not([customizing])[sizemode=normal] #navigator-toolbox > toolbar:not(#toolbar-menubar):not(#TabsToolbar):not(:-moz-lwtheme),
diff --git a/browser/themes/windows/browser.css b/browser/themes/windows/browser.css
index 2de5a6545..a0cdabfb2 100644
--- a/browser/themes/windows/browser.css
+++ b/browser/themes/windows/browser.css
@@ -16,6 +16,8 @@
 %define conditionalForwardWithUrlbar window:not([chromehidden~="toolbar"]) #urlbar-wrapper
 
 :root {
+  --titlebar-text-color: currentColor;
+
   --space-above-tabbar: 15px;
 
   --backbutton-urlbar-overlap: 6px;
@@ -129,8 +131,7 @@ toolbar:-moz-lwtheme {
 }
 
 @media (-moz-windows-default-theme) {
-  @media (-moz-os-version: windows-vista),
-         (-moz-os-version: windows-win7) {
+  @media (-moz-os-version: windows-win7) {
     #navigator-toolbox::after {
       border-bottom-color: #aabccf;
     }
@@ -158,9 +159,7 @@ toolbar:-moz-lwtheme {
   background-image: linear-gradient(@toolbarHighlight@, @toolbarHighlight@);
 }
 
-@media (-moz-os-version: windows-xp),
-       (-moz-os-version: windows-vista),
-       (-moz-os-version: windows-win7) {
+@media (-moz-os-version: windows-win7) {
   #nav-bar {
     background-image: linear-gradient(@toolbarHighlight@, transparent) !important;
   }
@@ -187,19 +186,22 @@ toolbar:-moz-lwtheme {
   transition: min-height 170ms ease-out, max-height 170ms ease-out, visibility 170ms linear;
 }
 
+#toolbar-menubar,
+#TabsToolbar {
+  color: var(--titlebar-text-color);
+}
+
 @media not all and (-moz-windows-compositor),
        not all and (-moz-windows-default-theme) {
   /* Please keep the menu text colors in this media block in sync with
    * devedition.css, minus the :not(:-moz-lwtheme) condition - see Bug 1165718.
    */
-  #main-window[tabsintitlebar]:not([inFullscreen]) #toolbar-menubar:not(:-moz-lwtheme),
-  #main-window[tabsintitlebar]:not([inFullscreen]) #TabsToolbar:not(:-moz-lwtheme) {
-    color: CaptionText;
+  :root[tabsintitlebar]:not([inFullscreen]):not(:-moz-lwtheme) {
+    --titlebar-text-color: CaptionText;
   }
 
-  #main-window[tabsintitlebar]:not([inFullscreen]) #toolbar-menubar:not(:-moz-lwtheme):-moz-window-inactive,
-  #main-window[tabsintitlebar]:not([inFullscreen]) #TabsToolbar:not(:-moz-lwtheme):-moz-window-inactive {
-    color: InactiveCaptionText;
+  :root[tabsintitlebar]:not([inFullscreen]):not(:-moz-lwtheme):-moz-window-inactive {
+    --titlebar-text-color: InactiveCaptionText;
   }
 }
 
@@ -313,64 +315,6 @@ toolbar:-moz-lwtheme {
   }
 }
 
-/* Render a window top border for lwthemes on WinXP modern themes: */
-@media (-moz-windows-theme: luna-blue) {
-  #main-window[tabsintitlebar][sizemode="normal"] > #tab-view-deck > #browser-panel:-moz-lwtheme {
-    background-image: linear-gradient(to bottom,
-        rgb(8, 49, 216) 0, rgb(8, 49, 216) 1px,
-        rgb(15, 77, 227) 1px, rgb(15, 77, 227) 2px,
-        rgb(22, 106, 238) 2px, rgb(22, 106, 238) 3px,
-        rgb(8, 85, 221) 3px, rgb(8, 85, 221) 4px,
-        transparent 4px);
-  }
-
-  #main-window[tabsintitlebar][sizemode="normal"] > #tab-view-deck > #browser-panel:-moz-lwtheme:-moz-window-inactive {
-    background-image: linear-gradient(to bottom,
-        rgb(91, 104, 205) 0, rgb(91, 104, 205) 1px,
-        rgb(116, 128, 220) 1px, rgb(116, 128, 220) 2px,
-        rgb(117, 140, 221) 2px, rgb(117, 140, 221) 4px,
-        transparent 4px);
-  }
-}
-
-@media (-moz-windows-theme: luna-silver) {
-  #main-window[tabsintitlebar][sizemode="normal"] > #tab-view-deck > #browser-panel:-moz-lwtheme {
-    background-image: linear-gradient(to bottom,
-        rgb(102,102,126) 0, rgb(102,102,126) 1px,
-        rgb(168,167,191) 1px, rgb(168,167,191) 2px,
-        white 2px, white 3px,
-        rgb(188,188,207) 3px, rgb(188,188,207) 4px,
-        transparent 4px);
-  }
-
-  #main-window[tabsintitlebar][sizemode="normal"] > #tab-view-deck > #browser-panel:-moz-lwtheme:-moz-window-inactive {
-    background-image: linear-gradient(to bottom,
-        rgb(186,186,197) 0, rgb(186,186,197) 1px,
-        rgb(236,238,245) 1px, rgb(236,238,245) 2px,
-        white 2px, white 3px,
-        rgb(215,215,227) 3px, rgb(215,215,227) 4px,
-        transparent 4px);
-  }
-}
-
-@media (-moz-windows-theme: luna-olive) {
-  #main-window[tabsintitlebar][sizemode="normal"] > #tab-view-deck > #browser-panel:-moz-lwtheme {
-    background-image: linear-gradient(to bottom,
-        rgb(139,161,105) 0, rgb(139,161,105) 1px,
-        rgb(171, 189, 133) 1px, rgb(171, 189, 133) 2px,
-        rgb(164,178,127) 2px, rgb(164,178,127) 3px,
-        transparent 3px);
-  }
-
-  #main-window[tabsintitlebar][sizemode="normal"] > #tab-view-deck > #browser-panel:-moz-lwtheme:-moz-window-inactive {
-    background-image: linear-gradient(to bottom,
-        rgb(207, 214, 188) 0, rgb(207, 214, 188) 1px,
-        rgb(224, 226, 200) 1px, rgb(224, 226, 200) 2px,
-        rgb(214, 216, 190) 2px, rgb(214, 216, 190) 3px,
-        transparent 3px);
-  }
-}
-
 #TabsToolbar:not([collapsed="true"]) + #nav-bar {
   /* Move up into the TabsToolbar for the inner highlight at the top of the nav-bar */
   margin-top: calc(-1 * var(--navbar-tab-toolbar-highlight-overlap));
@@ -401,12 +345,6 @@ toolbar:-moz-lwtheme {
   background-color: -moz-dialog;
 }
 
-@media (-moz-os-version: windows-xp) and (-moz-windows-default-theme) {
-  #main-window[tabsintitlebar][sizemode="normal"] #toolbar-menubar {
-    margin-top: 4px;
-  }
-}
-
 /* ::::: titlebar ::::: */
 
 #main-window[sizemode="normal"] > #titlebar {
@@ -427,7 +365,7 @@ toolbar:-moz-lwtheme {
  * click and hover mouse events to work properly for the button in the restored
  * window state. Otherwise, elements in the navigator-toolbox, like the menubar,
  * can swallow those events. It will also place the buttons above the fog on
- * themes with Aero Glass.
+ * Windows 7 with Aero Glass.
  */
 #titlebar-buttonbox {
   z-index: 1;
@@ -437,12 +375,6 @@ toolbar:-moz-lwtheme {
   margin-left: 22px; /* space needed for Aero Snap */
 }
 
-@media (-moz-os-version: windows-xp) {
-  .titlebar-placeholder[type="caption-buttons"] {
-    margin-left: 10px; /* less space needed on XP because there's no Aero Snap */
-  }
-}
-
 /* titlebar command buttons */
 
 #titlebar-min {
@@ -665,13 +597,6 @@ menuitem.bookmark-item {
 
 %include ../shared/toolbarbuttons.inc.css
 
-@media (-moz-windows-theme: luna-silver) and (max-resolution: 1dppx) {
-  :-moz-any(@primaryToolbarButtons@),
-  #bookmarks-menu-button.toolbarbutton-1 > .toolbarbutton-menubutton-dropmarker > .dropmarker-icon {
-    list-style-image: url("chrome://browser/skin/Toolbar-lunaSilver.png");
-  }
-}
-
 #main-window:not([customizing]) .toolbarbutton-1[disabled=true] > .toolbarbutton-icon,
 #main-window:not([customizing]) .toolbarbutton-1[disabled=true] > .toolbarbutton-menu-dropmarker,
 #main-window:not([customizing]) .toolbarbutton-1[disabled=true] > .toolbarbutton-menubutton-dropmarker,
@@ -775,10 +700,7 @@ toolbar[brighttext] .toolbarbutton-1 > .toolbarbutton-menubutton-dropmarker {
   max-width: 32px;
 }
 
-@media (-moz-os-version: windows-xp),
-       (-moz-os-version: windows-vista),
-       (-moz-os-version: windows-win7) {
-  /* < Win8 */
+@media (-moz-os-version: windows-win7) {
   :root {
     --toolbarbutton-hover-background: linear-gradient(hsla(0,0%,100%,.6), hsla(0,0%,100%,.1));
     --toolbarbutton-hover-bordercolor: hsla(210,54%,20%,.15) hsla(210,54%,20%,.2) hsla(210,54%,20%,.25);
@@ -1096,9 +1018,7 @@ toolbar[brighttext] #close-button {
   list-style-image: url(chrome://browser/skin/caption-buttons.svg#close-white);
 }
 
-@media (-moz-os-version: windows-xp),
-       (-moz-os-version: windows-vista),
-       (-moz-os-version: windows-win7) {
+@media (-moz-os-version: windows-win7) {
   #window-controls {
     margin-inline-start: 4px;
   }
@@ -1154,8 +1074,7 @@ toolbar[brighttext] #close-button {
   }
 }
 
-@media (-moz-os-version: windows-vista),
-       (-moz-os-version: windows-win7) {
+@media (-moz-os-version: windows-win7) {
   #window-controls {
     -moz-box-align: start;
   }
@@ -1199,8 +1118,7 @@ toolbar[brighttext] #close-button {
 }
 
 @media (-moz-windows-default-theme) {
-  @media (-moz-os-version: windows-vista),
-         (-moz-os-version: windows-win7),
+  @media (-moz-os-version: windows-win7),
          (-moz-os-version: windows-win8) {
     #main-window:not(:-moz-lwtheme) {
       --urlbar-border-color: hsla(210,54%,20%,.25) hsla(210,54%,20%,.27) hsla(210,54%,20%,.3);
@@ -1237,8 +1155,7 @@ toolbar[brighttext] #close-button {
     border-radius: 1px;
   }
 
-  @media (-moz-os-version: windows-vista),
-         (-moz-os-version: windows-win7),
+  @media (-moz-os-version: windows-win7),
          (-moz-os-version: windows-win8) {
     #urlbar:not(:-moz-lwtheme),
     .searchbar-textbox:not(:-moz-lwtheme) {
@@ -1261,11 +1178,9 @@ toolbar[brighttext] #close-button {
     }
   }
 
-  @media not all and (-moz-os-version: windows-xp) {
-    #urlbar:not(:-moz-lwtheme)[focused],
-    .searchbar-textbox:not(:-moz-lwtheme)[focused] {
-      border-color: Highlight;
-    }
+  #urlbar:not(:-moz-lwtheme)[focused],
+  .searchbar-textbox:not(:-moz-lwtheme)[focused] {
+    border-color: Highlight;
   }
 }
 
@@ -2018,9 +1933,7 @@ html|span.ac-emphasize-text-url {
   }
 }
 
-@media (-moz-os-version: windows-xp),
-       (-moz-os-version: windows-vista),
-       (-moz-os-version: windows-win7) {
+@media (-moz-os-version: windows-win7) {
   #sidebar-header > .close-icon {
     padding-top: 4px;
     padding-bottom: 4px;
@@ -2041,39 +1954,28 @@ html|span.ac-emphasize-text-url {
   margin-bottom: calc(-1 * var(--tab-toolbar-navbar-overlap)); /* overlap the nav-bar's top border */
 }
 
-@media (-moz-os-version: windows-xp) and (-moz-windows-default-theme) {
-  #main-window[sizemode=normal] #TabsToolbar {
-    padding-left: 2px;
-    padding-right: 2px;
-  }
-}
-
 %include ../shared/tabs.inc.css
 
 /* Remove border between tab strip and navigation toolbar on Windows 10+ */
-@media not all and (-moz-os-version: windows-xp) {
-  @media not all and (-moz-os-version: windows-vista) {
-    @media not all and (-moz-os-version: windows-win7) {
-      @media not all and (-moz-os-version: windows-win8) {
-        @media (-moz-windows-default-theme) {
-          .tab-background-end[selected=true]::after,
-          .tab-background-start[selected=true]::after {
-            content: none;
-          }
-
-          #TabsToolbar {
-            --tab-stroke-background-size: 0 0;
-          }
-
-          :root {
-            --tab-toolbar-navbar-overlap: 0px;
-          }
-
-          #nav-bar {
-            border-top-style: none !important;
-            box-shadow: none;
-          }
-        }
+@media not all and (-moz-os-version: windows-win7) {
+  @media not all and (-moz-os-version: windows-win8) {
+    @media (-moz-windows-default-theme) {
+      .tab-background-end[selected=true]::after,
+      .tab-background-start[selected=true]::after {
+        content: none;
+      }
+
+      #TabsToolbar {
+        --tab-stroke-background-size: 0 0;
+      }
+
+      :root {
+        --tab-toolbar-navbar-overlap: 0px;
+      }
+
+      #nav-bar {
+        border-top-style: none !important;
+        box-shadow: none;
       }
     }
   }
@@ -2558,22 +2460,6 @@ notification.pluginVulnerable > .notification-inner > .messageCloseButton {
   position: relative;
 }
 
-@media (-moz-os-version: windows-xp) {
-  @media not all and (-moz-windows-classic) {
-    #private-browsing-indicator-titlebar > .private-browsing-indicator {
-      background-image: url("chrome://browser/skin/privatebrowsing-mask-titlebar-XPVista7-tall.png");
-      height: 28px;
-    }
-
-    #main-window[sizemode="maximized"] > #titlebar > #titlebar-content > #titlebar-buttonbox-container > #private-browsing-indicator-titlebar > .private-browsing-indicator {
-      top: -5px;
-    }
-    #main-window[sizemode="normal"] > #titlebar > #titlebar-content > #titlebar-buttonbox-container > #private-browsing-indicator-titlebar > .private-browsing-indicator {
-      top: -1px;
-    }
-  }
-}
-
 @media (-moz-windows-classic) {
   /**
    * We have to use top instead of background-position in this case, otherwise
@@ -2585,8 +2471,7 @@ notification.pluginVulnerable > .notification-inner > .messageCloseButton {
   }
 }
 
-@media (-moz-os-version: windows-vista),
-       (-moz-os-version: windows-win7) {
+@media (-moz-os-version: windows-win7) {
   @media (-moz-windows-glass) {
     #main-window[sizemode="normal"] > #titlebar > #titlebar-content > #titlebar-buttonbox-container > #private-browsing-indicator-titlebar > .private-browsing-indicator {
       top: 1px;
@@ -2603,7 +2488,7 @@ notification.pluginVulnerable > .notification-inner > .messageCloseButton {
   @media (-moz-windows-default-theme) {
     @media not all and (-moz-windows-compositor) {
       #main-window[sizemode="normal"] > #titlebar > #titlebar-content > #titlebar-buttonbox-container > #private-browsing-indicator-titlebar > .private-browsing-indicator {
-        background-image: url("chrome://browser/skin/privatebrowsing-mask-titlebar-XPVista7-tall.png");
+        background-image: url("chrome://browser/skin/privatebrowsing-mask-titlebar-win7-tall.png");
         height: 28px;
       }
     }
@@ -2636,19 +2521,14 @@ notification.pluginVulnerable > .notification-inner > .messageCloseButton {
   margin-top: -4px;
 }
 
-
-@media not all and (-moz-os-version: windows-xp) {
 %include browser-aero.css
-}
 
 .browser-extension-panel > .panel-arrowcontainer > .panel-arrowcontent {
   padding: 0;
   overflow: hidden;
 }
 
-@media (-moz-os-version: windows-xp),
-       (-moz-os-version: windows-vista),
-       (-moz-os-version: windows-win7) {
+@media (-moz-os-version: windows-win7) {
   .cui-widget-panelview[id^=PanelUI-webext-] {
     border-radius: 4px;
   }
diff --git a/browser/themes/windows/caption-buttons.svg b/browser/themes/windows/caption-buttons.svg
index 3ba4f95a1..9cb42d539 100644
--- a/browser/themes/windows/caption-buttons.svg
+++ b/browser/themes/windows/caption-buttons.svg
@@ -1,49 +1,61 @@
+<svg width="12" height="12" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
 <!-- This Source Code Form is subject to the terms of the Mozilla Public
    - License, v. 2.0. If a copy of the MPL was not distributed with this
    - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
-<svg width="12" height="12" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
   <style>
+    g {
+      stroke: ButtonText;
+      stroke-width: 0.9px;
+      fill: none;
+    }
+
     g:not(:target) {
       display: none;
     }
+
     use:target > g {
       display: initial;
     }
 
-    g {
-      stroke: ButtonText;
-      stroke-width: 0.9px;
-      fill: none;
-    }
-    g:not([id|="close"]) {
-      shape-rendering: crispEdges;
+    .highlight > g {
+      stroke: HighlightText;
     }
 
-    .highcontrast {
-      stroke-width: 1.9px;
+    .inactive > g {
+      stroke: black;
     }
-    .highcontrast-hover > g {
-      stroke: HighlightText;
+    
+    .bolder {
+      stroke-width: 1.6px;
+      stroke: black;
     }
-    .white > g {
-      stroke: #fff;
+    
+    .outline  {
+      stroke-width: 4px;
+      stroke: white;
+      opacity: 0.75;
     }
-    .themes {
-      stroke: #fff;
-      stroke-width: 1.9px;
+    
+    .inverted  {
+      stroke-width: 1.6px;
+      stroke: white;
     }
 
-    .outer-stroke {
-      stroke: #000;
-      stroke-width: 3.6;
-      opacity: .75;
+    .outline-inverted  {
+      stroke-width: 4px;
+      stroke: black;
+      opacity: 0.75;
     }
-    .restore-background-window {
-      stroke-width: .9;
+    
+    .outline-thinner {
+      stroke-width: 3.6px;
     }
+
   </style>
+
   <g id="close">
-    <path d="M1,1 l 10,10 M1,11 l 10,-10"/>
+    <line x1="1" y1="1" x2="11" y2="11" stroke-width="1px"/>
+    <line x1="11" y1="1" x2="1" y2="11" stroke-width="1px"/>
   </g>
   <g id="maximize">
     <rect x="1.5" y="1.5" width="9" height="9"/>
@@ -56,45 +68,54 @@
     <polyline points="3.5,3.5 3.5,1.5 10.5,1.5 10.5,8.5 8.5,8.5"/>
   </g>
 
-  <use id="close-white" class="white" xlink:href="#close"/>
-  <use id="maximize-white" class="white" xlink:href="#maximize"/>
-  <use id="minimize-white" class="white" xlink:href="#minimize"/>
-  <use id="restore-white" class="white" xlink:href="#restore"/>
-
-  <g id="close-highcontrast" class="highcontrast">
-    <path d="M1,1 l 10,10 M1,11 l 10,-10"/>
+  <g id="close-outline">
+    <line x1="1" y1="1" x2="11" y2="11" stroke-linecap="round" class="outline"/>
+    <line x1="11" y1="1" x2="1" y2="11" stroke-linecap="round" class="outline"/>
+    <line x1="1" y1="1" x2="11" y2="11" class="bolder"/>
+    <line x1="11" y1="1" x2="1" y2="11" class="bolder"/>
   </g>
-  <g id="maximize-highcontrast" class="highcontrast">
-    <rect x="2" y="2" width="8" height="8"/>
+  <g id="maximize-outline">
+    <rect x="1.2" y="1.2" width="9.6" height="9.6" stroke-linecap="round" class="outline"/>
+    <rect x="1.5" y="1.5" width="9" height="9" class="bolder"/>
   </g>
-  <g id="minimize-highcontrast" class="highcontrast">
-    <line x1="1" y1="6" x2="11" y2="6"/>
+  <g id="minimize-outline">
+    <line x1="1" y1="5.5" x2="11" y2="5.5" stroke-linecap="round" class="outline outline-thinner"/>
+    <line x1="1" y1="5.5" x2="11" y2="5.5" class="bolder"/>
   </g>
-  <g id="restore-highcontrast" class="highcontrast">
-    <rect x="2" y="4" width="6" height="6"/>
-    <polyline points="3.5,1.5 10.5,1.5 10.5,8.5" class="restore-background-window"/>
+  <g id="restore-outline">
+    <rect x="1.5" y="3.5" width="7" height="7" stroke-linecap="round" class="outline"/>
+    <polyline points="3.5,3.5 3.5,1.5 10.5,1.5 10.5,8.5 8.5,8.5" stroke-linecap="round" class="outline"/>
+    <rect x="1.5" y="3.5" width="7" height="7" class="bolder"/>
+    <polyline points="3.5,3.5 3.5,1.5 10.5,1.5 10.5,8.5 8.5,8.5" class="bolder"/>
   </g>
 
-  <use id="close-highcontrast-hover" class="highcontrast-hover" xlink:href="#close-highcontrast"/>
-  <use id="maximize-highcontrast-hover" class="highcontrast-hover" xlink:href="#maximize-highcontrast"/>
-  <use id="minimize-highcontrast-hover" class="highcontrast-hover" xlink:href="#minimize-highcontrast"/>
-  <use id="restore-highcontrast-hover" class="highcontrast-hover" xlink:href="#restore-highcontrast"/>
-
-  <g id="close-themes" class="themes">
-    <path d="M1,1 l 10,10 M1,11 l 10,-10" class="outer-stroke" />
-    <path d="M1.75,1.75 l 8.5,8.5 M1.75,10.25 l 8.5,-8.5"/>
+  <g id="close-outline-inverted">
+    <line x1="1" y1="1" x2="11" y2="11" stroke-linecap="round" class="outline-inverted"/>
+    <line x1="11" y1="1" x2="1" y2="11" stroke-linecap="round" class="outline-inverted"/>
+    <line x1="1" y1="1" x2="11" y2="11" class="inverted"/>
+    <line x1="11" y1="1" x2="1" y2="11" class="inverted"/>
   </g>
-  <g id="maximize-themes" class="themes">
-    <rect x="2" y="2" width="8" height="8" class="outer-stroke"/>
-    <rect x="2" y="2" width="8" height="8"/>
+  <g id="maximize-outline-inverted">
+    <rect x="1.2" y="1.2" width="9.6" height="9.6" stroke-linecap="round" class="outline-inverted"/>
+    <rect x="1.5" y="1.5" width="9" height="9" class="inverted"/>
   </g>
-  <g id="minimize-themes" class="themes">
-    <line x1="0" y1="6" x2="12" y2="6" class="outer-stroke"/>
-    <line x1="1" y1="6" x2="11" y2="6"/>
+  <g id="minimize-outline-inverted">
+    <line x1="1" y1="5.5" x2="11" y2="5.5" stroke-linecap="round" class="outline-inverted outline-thinner"/>
+    <line x1="1" y1="5.5" x2="11" y2="5.5" class="inverted"/>
   </g>
-  <g id="restore-themes" class="themes">
-    <path d="M2,4 l 6,0 l 0,6 l -6,0z M2.5,1.5 l 8,0 l 0,8" class="outer-stroke"/>
-    <rect x="2" y="4" width="6" height="6"/>
-    <polyline points="3.5,1.5 10.5,1.5 10.5,8.5" class="restore-background-window"/>
+  <g id="restore-outline-inverted">
+    <rect x="1.5" y="3.5" width="7" height="7" stroke-linecap="round" class="outline-inverted"/>
+    <polyline points="3.5,3.5 3.5,1.5 10.5,1.5 10.5,8.5 8.5,8.5" stroke-linecap="round" class="outline-inverted"/>
+    <rect x="1.5" y="3.5" width="7" height="7" class="inverted"/>
+    <polyline points="3.5,3.5 3.5,1.5 10.5,1.5 10.5,8.5 8.5,8.5" class="inverted"/>
   </g>
+  
+  <use id="close-highlight" class="highlight" xlink:href="#close"/>
+  <use id="maximize-highlight" class="highlight" xlink:href="#maximize"/>
+  <use id="minimize-highlight" class="highlight" xlink:href="#minimize"/>
+  <use id="restore-highlight" class="highlight" xlink:href="#restore"/>
+  <use id="close-inactive" class="inactive" xlink:href="#close"/>
+  <use id="maximize-inactive" class="inactive" xlink:href="#maximize"/>
+  <use id="minimize-inactive" class="inactive" xlink:href="#minimize"/>
+  <use id="restore-inactive" class="inactive" xlink:href="#restore"/>
 </svg>
diff --git a/browser/themes/windows/customizableui/panelUI.css b/browser/themes/windows/customizableui/panelUI.css
index 92080d599..189a163f3 100644
--- a/browser/themes/windows/customizableui/panelUI.css
+++ b/browser/themes/windows/customizableui/panelUI.css
@@ -131,21 +131,17 @@ menu.subviewbutton > .menu-right:-moz-locale-dir(rtl) {
 }
 
 /* Win8 and beyond. */
-@media not all and (-moz-os-version: windows-xp) {
-  @media not all and (-moz-os-version: windows-vista) {
-    @media not all and (-moz-os-version: windows-win7) {
-      panelview .toolbarbutton-1,
-      .subviewbutton,
-      .widget-overflow-list .toolbarbutton-1,
-      .panelUI-grid .toolbarbutton-1 > .toolbarbutton-menubutton-button,
-      #BMB_bookmarksPopup menupopup[placespopup=true] > hbox,
-      #edit-controls@inAnyPanel@,
-      #zoom-controls@inAnyPanel@,
-      #edit-controls@inAnyPanel@ > toolbarbutton,
-      #zoom-controls@inAnyPanel@ > toolbarbutton {
-        border-radius: 0;
-      }
-    }
+@media not all and (-moz-os-version: windows-win7) {
+  panelview .toolbarbutton-1,
+  .subviewbutton,
+  .widget-overflow-list .toolbarbutton-1,
+  .panelUI-grid .toolbarbutton-1 > .toolbarbutton-menubutton-button,
+  #BMB_bookmarksPopup menupopup[placespopup=true] > hbox,
+  #edit-controls@inAnyPanel@,
+  #zoom-controls@inAnyPanel@,
+  #edit-controls@inAnyPanel@ > toolbarbutton,
+  #zoom-controls@inAnyPanel@ > toolbarbutton {
+    border-radius: 0;
   }
 }
 
diff --git a/browser/themes/windows/devedition.css b/browser/themes/windows/devedition.css
index 4c25f33a1..bdf4bb80e 100644
--- a/browser/themes/windows/devedition.css
+++ b/browser/themes/windows/devedition.css
@@ -16,7 +16,7 @@
 
 /* The window background is white due to no accentcolor in the lightweight
    theme. It can't be changed to transparent when there is no compositor
-   (Win XP or 7 in classic / basic theme), or else dragging and focus become
+   (Win 7 in classic / basic theme), or else dragging and focus become
    broken. So instead just show the normal titlebar in that case, and override
    the window color as transparent when the compositor is available. */
 @media not all and (-moz-windows-compositor) {
@@ -116,9 +116,7 @@
   }
 }
 
-@media (-moz-os-version: windows-xp),
-       (-moz-os-version: windows-vista),
-       (-moz-os-version: windows-win7),
+@media (-moz-os-version: windows-win7),
        (-moz-os-version: windows-win8) {
   :root {
     --space-above-tabbar: 15px;
@@ -193,14 +191,12 @@
   /* Use proper menu text styling in Win7 classic mode (copied from browser.css) */
   @media not all and (-moz-windows-compositor),
          not all and (-moz-windows-default-theme) {
-    #main-window[tabsintitlebar]:not([inFullscreen]) #toolbar-menubar,
-    #main-window[tabsintitlebar]:not([inFullscreen]) #TabsToolbar {
-      color: CaptionText;
+    :root[tabsintitlebar]:not([inFullscreen]) {
+      --titlebar-text-color: CaptionText;
     }
 
-    #main-window[tabsintitlebar]:not([inFullscreen]) #toolbar-menubar:-moz-window-inactive,
-    #main-window[tabsintitlebar]:not([inFullscreen]) #TabsToolbar:-moz-window-inactive {
-      color: InactiveCaptionText;
+    :root[tabsintitlebar]:not([inFullscreen]):-moz-window-inactive {
+      --titlebar-text-color: InactiveCaptionText;
     }
 
     #main-window[tabsintitlebar] #main-menubar > menu {
@@ -263,8 +259,7 @@
   color: var(--chrome-color);
 }
 
-@media (-moz-os-version: windows-vista),
-       (-moz-os-version: windows-win7),
+@media (-moz-os-version: windows-win7),
        (-moz-os-version: windows-win8) {
   /* And then we add them back on toolbars so that they don't look borderless: */
   #main-window:not([customizing])[sizemode=normal] #navigator-toolbox::after,
diff --git a/browser/themes/windows/downloads/allDownloadsViewOverlay.css b/browser/themes/windows/downloads/allDownloadsViewOverlay.css
index e288f1e90..0ee83f669 100644
--- a/browser/themes/windows/downloads/allDownloadsViewOverlay.css
+++ b/browser/themes/windows/downloads/allDownloadsViewOverlay.css
@@ -18,32 +18,30 @@
 
 /*** Highlighted list items ***/
 
-@media not all and (-moz-os-version: windows-xp) {
-  @media (-moz-windows-default-theme) {
-    /*
-    -moz-appearance: menuitem is almost right, but the hover effect is not
-    transparent and is lighter than desired.
-
-    Copied from the autocomplete richlistbox styling in
-    toolkit/themes/windows/global/autocomplete.css
-
-    This styling should be kept in sync with the style from the above file.
-    */
-    @itemFocused@ {
-      color: inherit;
-      background-color: transparent;
-      /* four gradients for the bevel highlights on each edge, one for blue background */
-      background-image:
-        linear-gradient(to bottom, rgba(255,255,255,0.9) 3px, transparent 3px),
-        linear-gradient(to right, rgba(255,255,255,0.5) 3px, transparent 3px),
-        linear-gradient(to left, rgba(255,255,255,0.5) 3px, transparent 3px),
-        linear-gradient(to top, rgba(255,255,255,0.4) 3px, transparent 3px),
-        linear-gradient(to bottom, rgba(163,196,247,0.3), rgba(122,180,246,0.3));
-      background-clip: content-box;
-      border-radius: 6px;
-      outline: 1px solid rgb(124,163,206);
-      -moz-outline-radius: 3px;
-      outline-offset: -2px;
-    }
+@media (-moz-windows-default-theme) {
+  /*
+  -moz-appearance: menuitem is almost right, but the hover effect is not
+  transparent and is lighter than desired.
+
+  Copied from the autocomplete richlistbox styling in
+  toolkit/themes/windows/global/autocomplete.css
+
+  This styling should be kept in sync with the style from the above file.
+  */
+  @itemFocused@ {
+    color: inherit;
+    background-color: transparent;
+    /* four gradients for the bevel highlights on each edge, one for blue background */
+    background-image:
+      linear-gradient(to bottom, rgba(255,255,255,0.9) 3px, transparent 3px),
+      linear-gradient(to right, rgba(255,255,255,0.5) 3px, transparent 3px),
+      linear-gradient(to left, rgba(255,255,255,0.5) 3px, transparent 3px),
+      linear-gradient(to top, rgba(255,255,255,0.4) 3px, transparent 3px),
+      linear-gradient(to bottom, rgba(163,196,247,0.3), rgba(122,180,246,0.3));
+    background-clip: content-box;
+    border-radius: 6px;
+    outline: 1px solid rgb(124,163,206);
+    -moz-outline-radius: 3px;
+    outline-offset: -2px;
   }
 }
diff --git a/browser/themes/windows/downloads/download-glow-menuPanel-XPVista7.png b/browser/themes/windows/downloads/download-glow-menuPanel-win7.png
index 7ff7e6a03..7ff7e6a03 100644
--- a/browser/themes/windows/downloads/download-glow-menuPanel-XPVista7.png
+++ b/browser/themes/windows/downloads/download-glow-menuPanel-win7.png
diff --git a/browser/themes/windows/downloads/download-glow-XPVista7.png b/browser/themes/windows/downloads/download-glow-win7.png
index e7415e83d..e7415e83d 100644
--- a/browser/themes/windows/downloads/download-glow-XPVista7.png
+++ b/browser/themes/windows/downloads/download-glow-win7.png
diff --git a/browser/themes/windows/downloads/indicator.css b/browser/themes/windows/downloads/indicator.css
index 627265088..7f921f8de 100644
--- a/browser/themes/windows/downloads/indicator.css
+++ b/browser/themes/windows/downloads/indicator.css
@@ -166,13 +166,9 @@ toolbar[brighttext] #downloads-button:not([counter])[attention="success"] > #dow
   font-size: 9px;
   line-height: 9px;
   text-align: center;
-}
 
-@media not all and (-moz-os-version: windows-xp) {
-  #downloads-indicator-counter {
-    /* Bug 812345 added this... */
-    margin-bottom: -1px;
-  }
+  /* Bug 812345 added this... */
+  margin-bottom: -1px;
 }
 
 toolbar[brighttext] #downloads-indicator-counter {
diff --git a/browser/themes/windows/feeds/feedIcon-XP.png b/browser/themes/windows/feeds/feedIcon-XP.png
deleted file mode 100644
index d0cafb1d4..000000000
--- a/browser/themes/windows/feeds/feedIcon-XP.png
+++ /dev/null
diff --git a/browser/themes/windows/feeds/feedIcon16-XP.png b/browser/themes/windows/feeds/feedIcon16-XP.png
deleted file mode 100644
index dd7821f8d..000000000
--- a/browser/themes/windows/feeds/feedIcon16-XP.png
+++ /dev/null
diff --git a/browser/themes/windows/jar.mn b/browser/themes/windows/jar.mn
index 89c589aba..410148645 100644
--- a/browser/themes/windows/jar.mn
+++ b/browser/themes/windows/jar.mn
@@ -11,21 +11,17 @@ browser.jar:
 * skin/classic/browser/syncedtabs/sidebar.css     (syncedtabs/sidebar.css)
   skin/classic/browser/actionicon-tab.png
   skin/classic/browser/actionicon-tab@2x.png
-  skin/classic/browser/actionicon-tab-XPVista7.png
+  skin/classic/browser/actionicon-tab-win7.png
 * skin/classic/browser/browser.css
 * skin/classic/browser/devedition.css
 * skin/classic/browser/browser-lightweightTheme.css
   skin/classic/browser/caption-buttons.svg
   skin/classic/browser/click-to-play-warning-stripes.png
   skin/classic/browser/Info.png
-  skin/classic/browser/Info-XP.png
   skin/classic/browser/keyhole-forward-mask.svg
   skin/classic/browser/livemark-folder.png
-  skin/classic/browser/livemark-folder-XP.png
   skin/classic/browser/menu-back.png
-  skin/classic/browser/menu-back-XP.png
   skin/classic/browser/menu-forward.png
-  skin/classic/browser/menu-forward-XP.png
   skin/classic/browser/menuPanel-customize.png
   skin/classic/browser/menuPanel-customize@2x.png
   skin/classic/browser/menuPanel-exit.png
@@ -36,36 +32,33 @@ browser.jar:
   skin/classic/browser/monitor_16-10.png
   skin/classic/browser/pageInfo.css
   skin/classic/browser/pageInfo.png
-  skin/classic/browser/pageInfo-XP.png
   skin/classic/browser/privatebrowsing-mask-tabstrip.png
-  skin/classic/browser/privatebrowsing-mask-tabstrip-XPVista7.png
+  skin/classic/browser/privatebrowsing-mask-tabstrip-win7.png
   skin/classic/browser/privatebrowsing-mask-titlebar.png
-  skin/classic/browser/privatebrowsing-mask-titlebar-XPVista7.png
-  skin/classic/browser/privatebrowsing-mask-titlebar-XPVista7-tall.png
+  skin/classic/browser/privatebrowsing-mask-titlebar-win7.png
+  skin/classic/browser/privatebrowsing-mask-titlebar-win7-tall.png
   skin/classic/browser/reload-stop-go.png
   skin/classic/browser/reload-stop-go@2x.png
-  skin/classic/browser/reload-stop-go-XPVista7.png
-  skin/classic/browser/reload-stop-go-XPVista7@2x.png
+  skin/classic/browser/reload-stop-go-win7.png
+  skin/classic/browser/reload-stop-go-win7@2x.png
   skin/classic/browser/searchbar.css
   skin/classic/browser/setDesktopBackground.css
   skin/classic/browser/slowStartup-16.png
   skin/classic/browser/Toolbar.png
   skin/classic/browser/Toolbar@2x.png
-  skin/classic/browser/Toolbar-aero.png
-  skin/classic/browser/Toolbar-aero@2x.png
+  skin/classic/browser/Toolbar-win7.png
+  skin/classic/browser/Toolbar-win7@2x.png
   skin/classic/browser/Toolbar-inverted.png
   skin/classic/browser/Toolbar-inverted@2x.png
-  skin/classic/browser/Toolbar-lunaSilver.png
   skin/classic/browser/Toolbar-win8.png
   skin/classic/browser/Toolbar-win8@2x.png
-  skin/classic/browser/Toolbar-XP.png
-  skin/classic/browser/toolbarbutton-dropdown-arrow-XPVista7.png
+  skin/classic/browser/toolbarbutton-dropdown-arrow-win7.png
   skin/classic/browser/toolbarbutton-dropdown-arrow-inverted.png
   skin/classic/browser/urlbar-popup-blocked.png
   skin/classic/browser/urlbar-history-dropmarker.png
   skin/classic/browser/urlbar-history-dropmarker@2x.png
-  skin/classic/browser/urlbar-history-dropmarker-XPVista7.png
-  skin/classic/browser/urlbar-history-dropmarker-XPVista7@2x.png
+  skin/classic/browser/urlbar-history-dropmarker-win7.png
+  skin/classic/browser/urlbar-history-dropmarker-win7@2x.png
   skin/classic/browser/webRTC-indicator.css
 * skin/classic/browser/controlcenter/panel.css                 (controlcenter/panel.css)
   skin/classic/browser/customizableui/background-noise-toolbar.png  (customizableui/background-noise-toolbar.png)
@@ -78,57 +71,40 @@ browser.jar:
 * skin/classic/browser/customizableui/panelUI.css       (customizableui/panelUI.css)
 * skin/classic/browser/downloads/allDownloadsViewOverlay.css   (downloads/allDownloadsViewOverlay.css)
   skin/classic/browser/downloads/download-glow-menuPanel.png   (downloads/download-glow-menuPanel.png)
-  skin/classic/browser/downloads/download-glow-menuPanel-XPVista7.png   (downloads/download-glow-menuPanel-XPVista7.png)
+  skin/classic/browser/downloads/download-glow-menuPanel-win7.png   (downloads/download-glow-menuPanel-win7.png)
   skin/classic/browser/downloads/download-notification-finish.png (downloads/download-notification-finish.png)
   skin/classic/browser/downloads/download-notification-start.png (downloads/download-notification-start.png)
 * skin/classic/browser/downloads/downloads.css                 (downloads/downloads.css)
   skin/classic/browser/feeds/feedIcon.png                      (feeds/feedIcon.png)
   skin/classic/browser/feeds/feedIcon16.png                    (feeds/feedIcon16.png)
-  skin/classic/browser/feeds/feedIcon-XP.png                   (feeds/feedIcon-XP.png)
-  skin/classic/browser/feeds/feedIcon16-XP.png                 (feeds/feedIcon16-XP.png)
   skin/classic/browser/feeds/subscribe.css                     (feeds/subscribe.css)
   skin/classic/browser/feeds/subscribe-ui.css                  (feeds/subscribe-ui.css)
 * skin/classic/browser/newtab/newTab.css                       (newtab/newTab.css)
   skin/classic/browser/places/autocomplete-star.png            (places/autocomplete-star.png)
   skin/classic/browser/places/autocomplete-star@2x.png         (places/autocomplete-star@2x.png)
-  skin/classic/browser/places/autocomplete-star-XPVista7.png   (places/autocomplete-star-XPVista7.png)
+  skin/classic/browser/places/autocomplete-star-win7.png       (places/autocomplete-star-win7.png)
   skin/classic/browser/places/places.css                       (places/places.css)
 * skin/classic/browser/places/organizer.css                    (places/organizer.css)
   skin/classic/browser/places/query.png                        (places/query.png)
-  skin/classic/browser/places/query-XP.png                     (places/query-XP.png)
   skin/classic/browser/places/bookmarksMenu.png                (places/bookmarksMenu.png)
-  skin/classic/browser/places/bookmarksMenu-XP.png             (places/bookmarksMenu-XP.png)
   skin/classic/browser/places/bookmarksToolbar.png             (places/bookmarksToolbar.png)
-  skin/classic/browser/places/bookmarksToolbar-XP.png          (places/bookmarksToolbar-XP.png)
   skin/classic/browser/places/bookmarksToolbar-menuPanel.png   (places/bookmarksToolbar-menuPanel.png)
-  skin/classic/browser/places/bookmarksToolbar-menuPanel-XP.png (places/bookmarksToolbar-menuPanel-XP.png)
   skin/classic/browser/places/bookmarks-notification-finish.png (places/bookmarks-notification-finish.png)
   skin/classic/browser/places/calendar.png                     (places/calendar.png)
-  skin/classic/browser/places/calendar-XP.png                  (places/calendar-XP.png)
   skin/classic/browser/places/toolbarDropMarker.png            (places/toolbarDropMarker.png)
-  skin/classic/browser/places/toolbarDropMarker-XP.png         (places/toolbarDropMarker-XP.png)
   skin/classic/browser/places/editBookmarkOverlay.css          (places/editBookmarkOverlay.css)
   skin/classic/browser/places/libraryToolbar.png               (places/libraryToolbar.png)
-  skin/classic/browser/places/libraryToolbar-XP.png            (places/libraryToolbar-XP.png)
   skin/classic/browser/places/starred48.png                    (places/starred48.png)
-  skin/classic/browser/places/starred48-XP.png                 (places/starred48-XP.png)
   skin/classic/browser/places/unstarred48.png                  (places/unstarred48.png)
   skin/classic/browser/places/tag.png                          (places/tag.png)
-  skin/classic/browser/places/tag-XP.png                       (places/tag-XP.png)
   skin/classic/browser/places/history.png                      (places/history.png)
-  skin/classic/browser/places/history-XP.png                   (places/history-XP.png)
   skin/classic/browser/places/allBookmarks.png                 (places/allBookmarks.png)
-  skin/classic/browser/places/allBookmarks-XP.png              (places/allBookmarks-XP.png)
   skin/classic/browser/places/unsortedBookmarks.png            (places/unsortedBookmarks.png)
-  skin/classic/browser/places/unsortedBookmarks-XP.png         (places/unsortedBookmarks-XP.png)
   skin/classic/browser/places/downloads.png                    (places/downloads.png)
   skin/classic/browser/places/livemark-item.png                (places/livemark-item.png)
   skin/classic/browser/preferences/alwaysAsk.png               (preferences/alwaysAsk.png)
-  skin/classic/browser/preferences/alwaysAsk-XP.png            (preferences/alwaysAsk-XP.png)
   skin/classic/browser/preferences/application.png             (preferences/application.png)
-  skin/classic/browser/preferences/application-XP.png          (preferences/application-XP.png)
   skin/classic/browser/preferences/saveFile.png                (preferences/saveFile.png)
-  skin/classic/browser/preferences/saveFile-XP.png             (preferences/saveFile-XP.png)
   skin/classic/browser/preferences/preferences.css             (preferences/preferences.css)
 * skin/classic/browser/preferences/in-content/preferences.css  (preferences/in-content/preferences.css)
 * skin/classic/browser/preferences/in-content/dialog.css       (preferences/in-content/dialog.css)
@@ -136,13 +112,13 @@ browser.jar:
   skin/classic/browser/social/services-16.png                  (social/services-16.png)
   skin/classic/browser/social/services-64.png                  (social/services-64.png)
   skin/classic/browser/tabbrowser/newtab.svg                   (tabbrowser/newtab.svg)
-  skin/classic/browser/tabbrowser/newtab-XPVista7.svg          (tabbrowser/newtab-XPVista7.svg)
+  skin/classic/browser/tabbrowser/newtab-win7.svg              (tabbrowser/newtab-win7.svg)
   skin/classic/browser/tabbrowser/newtab-inverted.svg          (tabbrowser/newtab-inverted.svg)
-  skin/classic/browser/tabbrowser/newtab-inverted-XPVista7.svg (tabbrowser/newtab-inverted-XPVista7.svg)
+  skin/classic/browser/tabbrowser/newtab-inverted-win7.svg     (tabbrowser/newtab-inverted-win7.svg)
   skin/classic/browser/tabbrowser/tab-active-middle.png        (tabbrowser/tab-active-middle.png)
   skin/classic/browser/tabbrowser/tab-active-middle@2x.png     (tabbrowser/tab-active-middle@2x.png)
   skin/classic/browser/tabbrowser/tab-arrow-left.svg           (tabbrowser/tab-arrow-left.svg)
-  skin/classic/browser/tabbrowser/tab-arrow-left-XPVista7.svg  (tabbrowser/tab-arrow-left-XPVista7.svg)
+  skin/classic/browser/tabbrowser/tab-arrow-left-win7.svg      (tabbrowser/tab-arrow-left-win7.svg)
   skin/classic/browser/tabbrowser/tab-arrow-left-inverted.svg  (tabbrowser/tab-arrow-left-inverted.svg)
   skin/classic/browser/tabbrowser/tab-background-start.png     (tabbrowser/tab-background-start.png)
   skin/classic/browser/tabbrowser/tab-background-start@2x.png  (tabbrowser/tab-background-start@2x.png)
@@ -174,8 +150,8 @@ browser.jar:
   skin/classic/browser/sync-desktopIcon.svg  (../shared/sync-desktopIcon.svg)
   skin/classic/browser/sync-horizontalbar.png
   skin/classic/browser/sync-horizontalbar@2x.png
-  skin/classic/browser/sync-horizontalbar-XPVista7.png
-  skin/classic/browser/sync-horizontalbar-XPVista7@2x.png
+  skin/classic/browser/sync-horizontalbar-win7.png
+  skin/classic/browser/sync-horizontalbar-win7@2x.png
   skin/classic/browser/sync-mobileIcon.svg  (../shared/sync-mobileIcon.svg)
   skin/classic/browser/sync-notification-24.png
   skin/classic/browser/syncSetup.css
@@ -183,19 +159,16 @@ browser.jar:
   skin/classic/browser/syncQuota.css
   skin/classic/browser/syncProgress-horizontalbar.png
   skin/classic/browser/syncProgress-horizontalbar@2x.png
-  skin/classic/browser/syncProgress-horizontalbar-XPVista7.png
-  skin/classic/browser/syncProgress-horizontalbar-XPVista7@2x.png
+  skin/classic/browser/syncProgress-horizontalbar-win7.png
+  skin/classic/browser/syncProgress-horizontalbar-win7@2x.png
   skin/classic/browser/syncProgress-menuPanel.png
   skin/classic/browser/syncProgress-menuPanel@2x.png
   skin/classic/browser/syncProgress-toolbar.png
   skin/classic/browser/syncProgress-toolbar@2x.png
   skin/classic/browser/syncProgress-toolbar-inverted.png
   skin/classic/browser/syncProgress-toolbar-inverted@2x.png
-  skin/classic/browser/syncProgress-toolbar-XPVista7.png
-  skin/classic/browser/syncProgress-toolbar-XPVista7@2x.png
-#ifdef E10S_TESTING_ONLY
-  skin/classic/browser/e10s-64@2x.png (../shared/e10s-64@2x.png)
-#endif
+  skin/classic/browser/syncProgress-toolbar-win7.png
+  skin/classic/browser/syncProgress-toolbar-win7@2x.png
 
 [extensions/{972ce4c6-7e08-4474-a285-3208198ce6fd}] chrome.jar:
 % override chrome://browser/skin/page-livemarks.png                   chrome://browser/skin/feeds/feedIcon16.png
@@ -205,58 +178,31 @@ browser.jar:
 % override chrome://browser/skin/feeds/videoFeedIcon16.png            chrome://browser/skin/feeds/feedIcon16.png
 
 % override chrome://browser/skin/aboutSessionRestore-window-icon.png  chrome://browser/skin/preferences/application.png                 os!=WINNT
-% override chrome://browser/skin/aboutSessionRestore-window-icon.png  chrome://browser/skin/preferences/application.png                 os=WINNT osversion<6
 
-% override chrome://browser/skin/Info.png                             chrome://browser/skin/Info-XP.png                                 os=WINNT osversion<6
-% override chrome://browser/skin/livemark-folder.png                  chrome://browser/skin/livemark-folder-XP.png                      os=WINNT osversion<6
-% override chrome://browser/skin/menu-back.png                        chrome://browser/skin/menu-back-XP.png                            os=WINNT osversion<6
-% override chrome://browser/skin/menu-forward.png                     chrome://browser/skin/menu-forward-XP.png                         os=WINNT osversion<6
-% override chrome://browser/skin/pageInfo.png                         chrome://browser/skin/pageInfo-XP.png                             os=WINNT osversion<6
-% override chrome://browser/skin/feeds/feedIcon.png                   chrome://browser/skin/feeds/feedIcon-XP.png                       os=WINNT osversion<6
-% override chrome://browser/skin/feeds/feedIcon16.png                 chrome://browser/skin/feeds/feedIcon16-XP.png                     os=WINNT osversion<6
-% override chrome://browser/skin/places/query.png                     chrome://browser/skin/places/query-XP.png                         os=WINNT osversion<6
-% override chrome://browser/skin/places/bookmarksMenu.png             chrome://browser/skin/places/bookmarksMenu-XP.png                 os=WINNT osversion<6
-% override chrome://browser/skin/places/bookmarksToolbar.png          chrome://browser/skin/places/bookmarksToolbar-XP.png              os=WINNT osversion<6
-% override chrome://browser/skin/places/bookmarksToolbar-menuPanel.png  chrome://browser/skin/places/bookmarksToolbar-menuPanel-XP.png  os=WINNT osversion<6
-% override chrome://browser/skin/places/calendar.png                  chrome://browser/skin/places/calendar-XP.png                      os=WINNT osversion<6
-% override chrome://browser/skin/places/toolbarDropMarker.png         chrome://browser/skin/places/toolbarDropMarker-XP.png             os=WINNT osversion<6
-% override chrome://browser/skin/places/libraryToolbar.png            chrome://browser/skin/places/libraryToolbar-XP.png                os=WINNT osversion<6
-% override chrome://browser/skin/places/starred48.png                 chrome://browser/skin/places/starred48-XP.png                     os=WINNT osversion<6
-% override chrome://browser/skin/places/tag.png                       chrome://browser/skin/places/tag-XP.png                           os=WINNT osversion<6
-% override chrome://browser/skin/places/history.png                   chrome://browser/skin/places/history-XP.png                       os=WINNT osversion<6
-% override chrome://browser/skin/places/allBookmarks.png              chrome://browser/skin/places/allBookmarks-XP.png                  os=WINNT osversion<6
-% override chrome://browser/skin/places/unsortedBookmarks.png         chrome://browser/skin/places/unsortedBookmarks-XP.png             os=WINNT osversion<6
-% override chrome://browser/skin/preferences/alwaysAsk.png            chrome://browser/skin/preferences/alwaysAsk-XP.png                os=WINNT osversion<6
-% override chrome://browser/skin/preferences/application.png          chrome://browser/skin/preferences/application-XP.png              os=WINNT osversion<6
-% override chrome://browser/skin/preferences/saveFile.png             chrome://browser/skin/preferences/saveFile-XP.png                 os=WINNT osversion<6
+% override chrome://browser/skin/actionicon-tab.png                   chrome://browser/skin/actionicon-tab-win7.png                 os=WINNT osversion<=6.1
+% override chrome://browser/skin/privatebrowsing-mask-tabstrip.png    chrome://browser/skin/privatebrowsing-mask-tabstrip-win7.png  os=WINNT osversion<=6.1
+% override chrome://browser/skin/privatebrowsing-mask-titlebar.png    chrome://browser/skin/privatebrowsing-mask-titlebar-win7.png  os=WINNT osversion<=6.1
+% override chrome://browser/skin/reload-stop-go.png                   chrome://browser/skin/reload-stop-go-win7.png                 os=WINNT osversion<=6.1
+% override chrome://browser/skin/reload-stop-go@2x.png                chrome://browser/skin/reload-stop-go-win7@2x.png              os=WINNT osversion<=6.1
+% override chrome://browser/skin/sync-horizontalbar.png               chrome://browser/skin/sync-horizontalbar-win7.png             os=WINNT osversion<=6.1
+% override chrome://browser/skin/sync-horizontalbar@2x.png            chrome://browser/skin/sync-horizontalbar-win7@2x.png          os=WINNT osversion<=6.1
+% override chrome://browser/skin/syncProgress-horizontalbar.png       chrome://browser/skin/syncProgress-horizontalbar-win7.png     os=WINNT osversion<=6.1
+% override chrome://browser/skin/syncProgress-horizontalbar@2x.png    chrome://browser/skin/syncProgress-horizontalbar-win7@2x.png  os=WINNT osversion<=6.1
+% override chrome://browser/skin/syncProgress-toolbar.png             chrome://browser/skin/syncProgress-toolbar-win7.png           os=WINNT osversion<=6.1
+% override chrome://browser/skin/syncProgress-toolbar@2x.png          chrome://browser/skin/syncProgress-toolbar-win7@2x.png        os=WINNT osversion<=6.1
+% override chrome://browser/skin/toolbarbutton-dropdown-arrow.png     chrome://browser/skin/toolbarbutton-dropdown-arrow-win7.png   os=WINNT osversion<=6.1
+% override chrome://browser/skin/urlbar-history-dropmarker.png        chrome://browser/skin/urlbar-history-dropmarker-win7.png      os=WINNT osversion<=6.1
+% override chrome://browser/skin/urlbar-history-dropmarker@2x.png     chrome://browser/skin/urlbar-history-dropmarker-win7@2x.png   os=WINNT osversion<=6.1
+% override chrome://browser/skin/downloads/download-glow-menuPanel.png  chrome://browser/skin/downloads/download-glow-menuPanel-win7.png os=WINNT osversion<=6.1
+% override chrome://browser/skin/places/autocomplete-star.png         chrome://browser/skin/places/autocomplete-star-win7.png       os=WINNT osversion<=6.1
+% override chrome://browser/skin/tabbrowser/newtab.svg                chrome://browser/skin/tabbrowser/newtab-win7.svg              os=WINNT osversion<=6.1
+% override chrome://browser/skin/tabbrowser/newtab-inverted.svg       chrome://browser/skin/tabbrowser/newtab-inverted-win7.svg     os=WINNT osversion<=6.1
+% override chrome://browser/skin/tabbrowser/tab-arrow-left.svg        chrome://browser/skin/tabbrowser/tab-arrow-left-win7.svg      os=WINNT osversion<=6.1
 
-% override chrome://browser/skin/actionicon-tab.png                   chrome://browser/skin/actionicon-tab-XPVista7.png                 os=WINNT osversion<=6.1
-% override chrome://browser/skin/privatebrowsing-mask-tabstrip.png    chrome://browser/skin/privatebrowsing-mask-tabstrip-XPVista7.png  os=WINNT osversion<=6.1
-% override chrome://browser/skin/privatebrowsing-mask-titlebar.png    chrome://browser/skin/privatebrowsing-mask-titlebar-XPVista7.png  os=WINNT osversion<=6.1
-% override chrome://browser/skin/reload-stop-go.png                   chrome://browser/skin/reload-stop-go-XPVista7.png                 os=WINNT osversion<=6.1
-% override chrome://browser/skin/reload-stop-go@2x.png                chrome://browser/skin/reload-stop-go-XPVista7@2x.png              os=WINNT osversion<=6.1
-% override chrome://browser/skin/sync-horizontalbar.png               chrome://browser/skin/sync-horizontalbar-XPVista7.png             os=WINNT osversion<=6.1
-% override chrome://browser/skin/sync-horizontalbar@2x.png            chrome://browser/skin/sync-horizontalbar-XPVista7@2x.png          os=WINNT osversion<=6.1
-% override chrome://browser/skin/syncProgress-horizontalbar.png       chrome://browser/skin/syncProgress-horizontalbar-XPVista7.png     os=WINNT osversion<=6.1
-% override chrome://browser/skin/syncProgress-horizontalbar@2x.png    chrome://browser/skin/syncProgress-horizontalbar-XPVista7@2x.png  os=WINNT osversion<=6.1
-% override chrome://browser/skin/syncProgress-toolbar.png             chrome://browser/skin/syncProgress-toolbar-XPVista7.png           os=WINNT osversion<=6.1
-% override chrome://browser/skin/syncProgress-toolbar@2x.png          chrome://browser/skin/syncProgress-toolbar-XPVista7@2x.png        os=WINNT osversion<=6.1
-% override chrome://browser/skin/toolbarbutton-dropdown-arrow.png     chrome://browser/skin/toolbarbutton-dropdown-arrow-XPVista7.png   os=WINNT osversion<=6.1
-% override chrome://browser/skin/urlbar-history-dropmarker.png        chrome://browser/skin/urlbar-history-dropmarker-XPVista7.png      os=WINNT osversion<=6.1
-% override chrome://browser/skin/urlbar-history-dropmarker@2x.png     chrome://browser/skin/urlbar-history-dropmarker-XPVista7@2x.png   os=WINNT osversion<=6.1
-% override chrome://browser/skin/downloads/download-glow-menuPanel.png  chrome://browser/skin/downloads/download-glow-menuPanel-XPVista7.png os=WINNT osversion<=6.1
-% override chrome://browser/skin/places/autocomplete-star.png         chrome://browser/skin/places/autocomplete-star-XPVista7.png       os=WINNT osversion<=6.1
-% override chrome://browser/skin/tabbrowser/newtab.svg                chrome://browser/skin/tabbrowser/newtab-XPVista7.svg              os=WINNT osversion<=6.1
-% override chrome://browser/skin/tabbrowser/newtab-inverted.svg       chrome://browser/skin/tabbrowser/newtab-inverted-XPVista7.svg     os=WINNT osversion<=6.1
-% override chrome://browser/skin/tabbrowser/tab-arrow-left.svg        chrome://browser/skin/tabbrowser/tab-arrow-left-XPVista7.svg      os=WINNT osversion<=6.1
-
-% override chrome://browser/skin/Toolbar@2x.png                       chrome://browser/skin/Toolbar-aero@2x.png                         os=WINNT osversion=6
-% override chrome://browser/skin/Toolbar@2x.png                       chrome://browser/skin/Toolbar-aero@2x.png                         os=WINNT osversion=6.1
+% override chrome://browser/skin/Toolbar@2x.png                       chrome://browser/skin/Toolbar-win7@2x.png                         os=WINNT osversion=6.1
 % override chrome://browser/skin/Toolbar@2x.png                       chrome://browser/skin/Toolbar-win8@2x.png                         os=WINNT osversion=6.2
 % override chrome://browser/skin/Toolbar@2x.png                       chrome://browser/skin/Toolbar-win8@2x.png                         os=WINNT osversion=6.3
-% override chrome://browser/skin/Toolbar.png                          chrome://browser/skin/Toolbar-XP.png                              os=WINNT osversion<6
-% override chrome://browser/skin/Toolbar.png                          chrome://browser/skin/Toolbar-aero.png                            os=WINNT osversion=6
-% override chrome://browser/skin/Toolbar.png                          chrome://browser/skin/Toolbar-aero.png                            os=WINNT osversion=6.1
+% override chrome://browser/skin/Toolbar.png                          chrome://browser/skin/Toolbar-win7.png                            os=WINNT osversion=6.1
 % override chrome://browser/skin/Toolbar.png                          chrome://browser/skin/Toolbar-win8.png                            os=WINNT osversion=6.2
 % override chrome://browser/skin/Toolbar.png                          chrome://browser/skin/Toolbar-win8.png                            os=WINNT osversion=6.3
 
diff --git a/browser/themes/windows/livemark-folder-XP.png b/browser/themes/windows/livemark-folder-XP.png
deleted file mode 100644
index 00aa0364d..000000000
--- a/browser/themes/windows/livemark-folder-XP.png
+++ /dev/null
diff --git a/browser/themes/windows/menu-back-XP.png b/browser/themes/windows/menu-back-XP.png
deleted file mode 100644
index ecb8ccd1a..000000000
--- a/browser/themes/windows/menu-back-XP.png
+++ /dev/null
diff --git a/browser/themes/windows/menu-forward-XP.png b/browser/themes/windows/menu-forward-XP.png
deleted file mode 100644
index a7460dc27..000000000
--- a/browser/themes/windows/menu-forward-XP.png
+++ /dev/null
diff --git a/browser/themes/windows/pageInfo-XP.png b/browser/themes/windows/pageInfo-XP.png
deleted file mode 100644
index bbf257237..000000000
--- a/browser/themes/windows/pageInfo-XP.png
+++ /dev/null
diff --git a/browser/themes/windows/places/allBookmarks-XP.png b/browser/themes/windows/places/allBookmarks-XP.png
deleted file mode 100644
index f7903cc5f..000000000
--- a/browser/themes/windows/places/allBookmarks-XP.png
+++ /dev/null
diff --git a/browser/themes/windows/places/autocomplete-star-XPVista7.png b/browser/themes/windows/places/autocomplete-star-win7.png
index af694e91c..af694e91c 100644
--- a/browser/themes/windows/places/autocomplete-star-XPVista7.png
+++ b/browser/themes/windows/places/autocomplete-star-win7.png
diff --git a/browser/themes/windows/places/bookmarksMenu-XP.png b/browser/themes/windows/places/bookmarksMenu-XP.png
deleted file mode 100644
index 8f0c8bf58..000000000
--- a/browser/themes/windows/places/bookmarksMenu-XP.png
+++ /dev/null
diff --git a/browser/themes/windows/places/bookmarksToolbar-XP.png b/browser/themes/windows/places/bookmarksToolbar-XP.png
deleted file mode 100644
index 9e988de20..000000000
--- a/browser/themes/windows/places/bookmarksToolbar-XP.png
+++ /dev/null
diff --git a/browser/themes/windows/places/bookmarksToolbar-menuPanel-XP.png b/browser/themes/windows/places/bookmarksToolbar-menuPanel-XP.png
deleted file mode 100644
index 0e4247adb..000000000
--- a/browser/themes/windows/places/bookmarksToolbar-menuPanel-XP.png
+++ /dev/null
diff --git a/browser/themes/windows/places/calendar-XP.png b/browser/themes/windows/places/calendar-XP.png
deleted file mode 100644
index 7645af5cd..000000000
--- a/browser/themes/windows/places/calendar-XP.png
+++ /dev/null
diff --git a/browser/themes/windows/places/history-XP.png b/browser/themes/windows/places/history-XP.png
deleted file mode 100644
index fcc89bbbf..000000000
--- a/browser/themes/windows/places/history-XP.png
+++ /dev/null
diff --git a/browser/themes/windows/places/libraryToolbar-XP.png b/browser/themes/windows/places/libraryToolbar-XP.png
deleted file mode 100644
index 75b390ff6..000000000
--- a/browser/themes/windows/places/libraryToolbar-XP.png
+++ /dev/null
diff --git a/browser/themes/windows/places/organizer.css b/browser/themes/windows/places/organizer.css
index 4de603b9f..9ae4c8370 100644
--- a/browser/themes/windows/places/organizer.css
+++ b/browser/themes/windows/places/organizer.css
@@ -20,13 +20,6 @@
   list-style-image: url("chrome://browser/skin/Toolbar.png");
 }
 
-@media (-moz-windows-theme: luna-silver) {
-  #back-button,
-  #forward-button {
-    list-style-image: url("chrome://browser/skin/Toolbar-lunaSilver.png");
-  }
-}
-
 #back-button {
   -moz-image-region: rect(0, 54px, 18px, 36px);
 }
@@ -119,11 +112,6 @@
   -moz-image-region: rect(16px, 48px, 32px, 32px);
 }
 
-/* Root View */
-#placesView {
-  border-top: 1px solid ThreeDDarkShadow;
-}
-
 /* Info box */
 #detailsDeck {
   border-top: 1px solid ThreeDShadow;
@@ -151,35 +139,28 @@
   padding-inline-end: 9px;
 }
 
-
-@media not all and (-moz-os-version: windows-xp) {
-  #placesView {
-    border-top: none;
+@media not all and (-moz-windows-classic) {
+  #placesToolbox {
+    -moz-appearance: none;
+    background-color: transparent;
   }
 
-  @media not all and (-moz-windows-classic) {
-    #placesToolbox {
-      -moz-appearance: none;
-      background-color: transparent;
-    }
-
-    #placesToolbar {
-      -moz-appearance: none;
-      background-color: -moz-Dialog;
-      color: -moz-dialogText;
-    }
+  #placesToolbar {
+    -moz-appearance: none;
+    background-color: -moz-Dialog;
+    color: -moz-dialogText;
   }
+}
 
-  @media (-moz-windows-default-theme) {
-    #placesView > splitter {
-      border: 0;
-      border-inline-end: 1px solid #A9B7C9;
-      min-width: 0;
-      width: 3px;
-      background-color: transparent;
-      margin-inline-start: -3px;
-      position: relative;
-    }
+@media (-moz-windows-default-theme) {
+  #placesView > splitter {
+    border: 0;
+    border-inline-end: 1px solid #A9B7C9;
+    min-width: 0;
+    width: 3px;
+    background-color: transparent;
+    margin-inline-start: -3px;
+    position: relative;
   }
 }
 
@@ -193,8 +174,7 @@
   }
 }
 
-@media (-moz-windows-default-theme) and (-moz-os-version: windows-vista),
-       (-moz-windows-default-theme) and (-moz-os-version: windows-win7) {
+@media (-moz-windows-default-theme) and (-moz-os-version: windows-win7) {
   #placesView,
   #infoPane,
   #placesList,
diff --git a/browser/themes/windows/places/places.css b/browser/themes/windows/places/places.css
index 4ec8f6555..769cfcc25 100644
--- a/browser/themes/windows/places/places.css
+++ b/browser/themes/windows/places/places.css
@@ -24,21 +24,17 @@
   cursor: default;
 }
 
-/* Style Places sidebars as Vista media collection */
 @media (-moz-windows-default-theme) {
-  @media not all and (-moz-os-version: windows-xp) {
-    .sidebar-placesTree {
-      background-color: transparent;
-      border-top: none;
-    }
+  .sidebar-placesTree {
+    background-color: transparent;
+    border-top: none;
+  }
 
-    .sidebar-placesTreechildren::-moz-tree-cell-text(leaf, hover) {
-      text-decoration: none;
-    }
+  .sidebar-placesTreechildren::-moz-tree-cell-text(leaf, hover) {
+    text-decoration: none;
   }
 
-  @media (-moz-os-version: windows-vista),
-         (-moz-os-version: windows-win7) {
+  @media (-moz-os-version: windows-win7) {
     #bookmarksPanel,
     #history-panel,
     #tabs-panel {
diff --git a/browser/themes/windows/places/query-XP.png b/browser/themes/windows/places/query-XP.png
deleted file mode 100644
index 9e79fc791..000000000
--- a/browser/themes/windows/places/query-XP.png
+++ /dev/null
diff --git a/browser/themes/windows/places/starred48-XP.png b/browser/themes/windows/places/starred48-XP.png
deleted file mode 100644
index 1cb7bc57d..000000000
--- a/browser/themes/windows/places/starred48-XP.png
+++ /dev/null
diff --git a/browser/themes/windows/places/tag-XP.png b/browser/themes/windows/places/tag-XP.png
deleted file mode 100644
index 4b4a13e66..000000000
--- a/browser/themes/windows/places/tag-XP.png
+++ /dev/null
diff --git a/browser/themes/windows/places/toolbarDropMarker-XP.png b/browser/themes/windows/places/toolbarDropMarker-XP.png
deleted file mode 100644
index 9173b7a7a..000000000
--- a/browser/themes/windows/places/toolbarDropMarker-XP.png
+++ /dev/null
diff --git a/browser/themes/windows/places/unsortedBookmarks-XP.png b/browser/themes/windows/places/unsortedBookmarks-XP.png
deleted file mode 100644
index cf73f9464..000000000
--- a/browser/themes/windows/places/unsortedBookmarks-XP.png
+++ /dev/null
diff --git a/browser/themes/windows/preferences/alwaysAsk-XP.png b/browser/themes/windows/preferences/alwaysAsk-XP.png
deleted file mode 100644
index 8693211ac..000000000
--- a/browser/themes/windows/preferences/alwaysAsk-XP.png
+++ /dev/null
diff --git a/browser/themes/windows/preferences/application-XP.png b/browser/themes/windows/preferences/application-XP.png
deleted file mode 100644
index 7d279ff84..000000000
--- a/browser/themes/windows/preferences/application-XP.png
+++ /dev/null
diff --git a/browser/themes/windows/preferences/saveFile-XP.png b/browser/themes/windows/preferences/saveFile-XP.png
deleted file mode 100644
index e115eaa9f..000000000
--- a/browser/themes/windows/preferences/saveFile-XP.png
+++ /dev/null
diff --git a/browser/themes/windows/privatebrowsing-mask-tabstrip-XPVista7.png b/browser/themes/windows/privatebrowsing-mask-tabstrip-win7.png
index bd5d46a76..bd5d46a76 100644
--- a/browser/themes/windows/privatebrowsing-mask-tabstrip-XPVista7.png
+++ b/browser/themes/windows/privatebrowsing-mask-tabstrip-win7.png
diff --git a/browser/themes/windows/privatebrowsing-mask-titlebar-XPVista7-tall.png b/browser/themes/windows/privatebrowsing-mask-titlebar-win7-tall.png
index 4a723c54e..4a723c54e 100644
--- a/browser/themes/windows/privatebrowsing-mask-titlebar-XPVista7-tall.png
+++ b/browser/themes/windows/privatebrowsing-mask-titlebar-win7-tall.png
diff --git a/browser/themes/windows/privatebrowsing-mask-titlebar-XPVista7.png b/browser/themes/windows/privatebrowsing-mask-titlebar-win7.png
index 835912b53..835912b53 100644
--- a/browser/themes/windows/privatebrowsing-mask-titlebar-XPVista7.png
+++ b/browser/themes/windows/privatebrowsing-mask-titlebar-win7.png
diff --git a/browser/themes/windows/reload-stop-go-XPVista7.png b/browser/themes/windows/reload-stop-go-win7.png
index 3ef32c3ce..3ef32c3ce 100644
--- a/browser/themes/windows/reload-stop-go-XPVista7.png
+++ b/browser/themes/windows/reload-stop-go-win7.png
diff --git a/browser/themes/windows/reload-stop-go-XPVista7@2x.png b/browser/themes/windows/reload-stop-go-win7@2x.png
index 38b27bf0c..38b27bf0c 100644
--- a/browser/themes/windows/reload-stop-go-XPVista7@2x.png
+++ b/browser/themes/windows/reload-stop-go-win7@2x.png
diff --git a/browser/themes/windows/sync-horizontalbar-XPVista7.png b/browser/themes/windows/sync-horizontalbar-win7.png
index 2c97ce6db..2c97ce6db 100644
--- a/browser/themes/windows/sync-horizontalbar-XPVista7.png
+++ b/browser/themes/windows/sync-horizontalbar-win7.png
diff --git a/browser/themes/windows/sync-horizontalbar-XPVista7@2x.png b/browser/themes/windows/sync-horizontalbar-win7@2x.png
index ee117ab73..ee117ab73 100644
--- a/browser/themes/windows/sync-horizontalbar-XPVista7@2x.png
+++ b/browser/themes/windows/sync-horizontalbar-win7@2x.png
diff --git a/browser/themes/windows/syncProgress-horizontalbar-XPVista7.png b/browser/themes/windows/syncProgress-horizontalbar-win7.png
index 48cd11055..48cd11055 100644
--- a/browser/themes/windows/syncProgress-horizontalbar-XPVista7.png
+++ b/browser/themes/windows/syncProgress-horizontalbar-win7.png
diff --git a/browser/themes/windows/syncProgress-horizontalbar-XPVista7@2x.png b/browser/themes/windows/syncProgress-horizontalbar-win7@2x.png
index 741dd2ed4..741dd2ed4 100644
--- a/browser/themes/windows/syncProgress-horizontalbar-XPVista7@2x.png
+++ b/browser/themes/windows/syncProgress-horizontalbar-win7@2x.png
diff --git a/browser/themes/windows/syncProgress-toolbar-XPVista7.png b/browser/themes/windows/syncProgress-toolbar-win7.png
index 49e224f0d..49e224f0d 100644
--- a/browser/themes/windows/syncProgress-toolbar-XPVista7.png
+++ b/browser/themes/windows/syncProgress-toolbar-win7.png
diff --git a/browser/themes/windows/syncProgress-toolbar-XPVista7@2x.png b/browser/themes/windows/syncProgress-toolbar-win7@2x.png
index fd2038725..fd2038725 100644
--- a/browser/themes/windows/syncProgress-toolbar-XPVista7@2x.png
+++ b/browser/themes/windows/syncProgress-toolbar-win7@2x.png
diff --git a/browser/themes/windows/tabbrowser/newtab-inverted-XPVista7.svg b/browser/themes/windows/tabbrowser/newtab-inverted-win7.svg
index 10ffbc745..10ffbc745 100644
--- a/browser/themes/windows/tabbrowser/newtab-inverted-XPVista7.svg
+++ b/browser/themes/windows/tabbrowser/newtab-inverted-win7.svg
diff --git a/browser/themes/windows/tabbrowser/newtab-XPVista7.svg b/browser/themes/windows/tabbrowser/newtab-win7.svg
index 3f431c9db..3f431c9db 100644
--- a/browser/themes/windows/tabbrowser/newtab-XPVista7.svg
+++ b/browser/themes/windows/tabbrowser/newtab-win7.svg
diff --git a/browser/themes/windows/tabbrowser/tab-arrow-left-XPVista7.svg b/browser/themes/windows/tabbrowser/tab-arrow-left-win7.svg
index 41bb5ab13..41bb5ab13 100644
--- a/browser/themes/windows/tabbrowser/tab-arrow-left-XPVista7.svg
+++ b/browser/themes/windows/tabbrowser/tab-arrow-left-win7.svg
diff --git a/browser/themes/windows/toolbarbutton-dropdown-arrow-XPVista7.png b/browser/themes/windows/toolbarbutton-dropdown-arrow-win7.png
index 5f892f532..5f892f532 100644
--- a/browser/themes/windows/toolbarbutton-dropdown-arrow-XPVista7.png
+++ b/browser/themes/windows/toolbarbutton-dropdown-arrow-win7.png
diff --git a/browser/themes/windows/urlbar-history-dropmarker-XPVista7.png b/browser/themes/windows/urlbar-history-dropmarker-win7.png
index b03338822..b03338822 100644
--- a/browser/themes/windows/urlbar-history-dropmarker-XPVista7.png
+++ b/browser/themes/windows/urlbar-history-dropmarker-win7.png
diff --git a/browser/themes/windows/urlbar-history-dropmarker-XPVista7@2x.png b/browser/themes/windows/urlbar-history-dropmarker-win7@2x.png
index bff2997f8..bff2997f8 100644
--- a/browser/themes/windows/urlbar-history-dropmarker-XPVista7@2x.png
+++ b/browser/themes/windows/urlbar-history-dropmarker-win7@2x.png
diff --git a/browser/themes/windows/windowsShared.inc b/browser/themes/windows/windowsShared.inc
index 0cb2ab163..199a62292 100644
--- a/browser/themes/windows/windowsShared.inc
+++ b/browser/themes/windows/windowsShared.inc
@@ -8,6 +8,4 @@
 %define fgTabTexture linear-gradient(transparent 2px, @toolbarHighlight@ 2px, @toolbarHighlight@)
 %define fgTabBackgroundColor -moz-dialog
 %define fgTabTextureLWT @fgTabTexture@
-
-% Aero-only defines
 %define customToolbarColor hsl(210,75%,92%)