<html style="background: #88F; color: #88F;" xmlns="http://www.w3.org/1999/xhtml" xmlns:m="http://www.w3.org/1998/Math/MathML">
<body>

<!-- Test that text that should be invisible is invisible (assuming text is drawn at all) -->
<p>This should be invisible.</p>

<!-- Test that color inherits into MathML (assuming MathML text is drawn at all) -->
<p><m:math><m:mi>x</m:mi></m:math></p>

</body>
</html>