2 files changed, 86 insertions, 0 deletions
diff --git a/application/palemoon/themes/windows/browser.css b/application/palemoon/themes/windows/browser.css
index e4f5f679f..f921554df 100644
--- a/application/palemoon/themes/windows/browser.css
+++ b/application/palemoon/themes/windows/browser.css
@@ -2018,6 +2018,90 @@ richlistitem[type~="action"][actiontype="switchtab"] > .ac-url-box > .ac-action-
   list-style-image: url("chrome://global/skin/icons/close-inverted.svg");
 }
 
+/* Tab sound indicator */
+.tab-icon-sound {
+  -moz-margin-start: 4px;
+  width: 16px;
+  height: 16px;
+  padding: 0;
+}
+
+.allTabs-endimage[soundplaying],
+.tab-icon-sound[soundplaying] {
+  list-style-image: url("chrome://browser/skin/tabbrowser/tab-audio.svg#tab-audio");
+}
+
+.allTabs-endimage[muted],
+.tab-icon-sound[muted] {
+  list-style-image: url("chrome://browser/skin/tabbrowser/tab-audio.svg#tab-audio-muted");
+}
+
+.allTabs-endimage[blocked],
+.tab-icon-sound[blocked] {
+  list-style-image: url("chrome://browser/skin/tabbrowser/tab-audio.svg#tab-audio-blocked");
+}
+
+#TabsToolbar[brighttext] .tab-icon-sound[soundplaying],
+#TabsToolbar[brighttext] .tab-icon-sound[blocked],
+#TabsToolbar[brighttext] .tab-icon-sound[muted] {
+  filter: invert(1);
+}
+
+.tab-icon-sound[soundplaying-scheduledremoval]:not([muted]):not(:hover),
+.tab-icon-overlay[soundplaying-scheduledremoval]:not([muted]):not(:hover) {
+  transition: opacity .3s linear var(--soundplaying-removal-delay);
+  opacity: 0;
+}
+
+/* Tab icon overlay */
+.tab-icon-overlay {
+  width: 16px;
+  height: 16px;
+  margin-top: -8px;
+  margin-inline-start: -15px;
+  margin-inline-end: -1px;
+  position: relative;
+}
+
+.tab-icon-overlay[soundplaying],
+.tab-icon-overlay[muted]:not([crashed]),
+.tab-icon-overlay[blocked]:not([crashed]) {
+  border-radius: 10px;
+}
+
+.tab-icon-overlay[soundplaying]:hover,
+.tab-icon-overlay[muted]:not([crashed]):hover,
+.tab-icon-overlay[blocked]:not([crashed]):hover {
+  background-color: white;
+}
+
+.tab-icon-overlay[soundplaying] {
+  list-style-image: url("chrome://browser/skin/tabbrowser/tab-audio-small.svg#tab-audio");
+}
+
+.tab-icon-overlay[muted] {
+  list-style-image: url("chrome://browser/skin/tabbrowser/tab-audio-small.svg#tab-audio-muted");
+}
+
+.tab-icon-overlay[blocked] {
+  list-style-image: url("chrome://browser/skin/tabbrowser/tab-audio-small.svg#tab-audio-blocked");
+}
+
+#TabsToolbar[brighttext] .tab-icon-overlay[soundplaying]:not([selected]):not(:hover),
+.tab-icon-overlay[soundplaying][selected]:-moz-lwtheme-brighttext:not(:hover) {
+  list-style-image: url("chrome://browser/skin/tabbrowser/tab-audio-small.svg#tab-audio-white");
+}
+
+#TabsToolbar[brighttext] .tab-icon-overlay[muted]:not([crashed]):not([selected]):not(:hover),
+.tab-icon-overlay[muted][selected]:-moz-lwtheme-brighttext:not(:hover) {
+  list-style-image: url("chrome://browser/skin/tabbrowser/tab-audio-small.svg#tab-audio-white-muted");
+}
+
+#TabsToolbar[brighttext] .tab-icon-overlay[blocked]:not([crashed]):not([selected]):not(:hover),
+.tab-icon-overlay[blocked][selected]:-moz-lwtheme-brighttext:not(:hover) {
+  list-style-image: url("chrome://browser/skin/tabbrowser/tab-audio-small.svg#tab-audio-white-blocked");
+}
+
 /* Tab scrollbox arrow, tabstrip new tab and all-tabs buttons */
 
 .tabbrowser-arrowscrollbox > .scrollbutton-up,
diff --git a/application/palemoon/themes/windows/jar.mn b/application/palemoon/themes/windows/jar.mn
index eb5edb3c1..724bac689 100644
--- a/application/palemoon/themes/windows/jar.mn
+++ b/application/palemoon/themes/windows/jar.mn
@@ -150,6 +150,8 @@ browser.jar:
         skin/classic/browser/tabbrowser/tab-arrow-left-inverted.png  (tabbrowser/tab-arrow-left-inverted.png)
         skin/classic/browser/tabbrowser/tab-overflow-border.png      (tabbrowser/tab-overflow-border.png)
         skin/classic/browser/tabbrowser/tabDragIndicator.png         (tabbrowser/tabDragIndicator.png)
+        skin/classic/browser/tabbrowser/tab-audio.svg                (../shared/tabbrowser/tab-audio.svg)
+        skin/classic/browser/tabbrowser/tab-audio-small.svg          (../shared/tabbrowser/tab-audio-small.svg)
 #ifdef MOZ_SERVICES_SYNC
         skin/classic/browser/sync-throbber.png
         skin/classic/browser/sync-16.png