When you use an HTML tag, let's say <TD bgColor="ButtonFace"> .. the colour is not displayed correctly, and for me usually ends up as a bright purple. This may not be an official way of using CSS2 system colours, but I think it should be used.

The purple is quite possibly due to CSS2 system fonts not working on Windows yet: see bug 33312, "WinGFX: need support for css2/css3 system fonts", M17.

sidr: this bug is not about the system fonts, it's about the system colors. The way the color string is interpreted causes some interesting effects. See the attached testcase.

Even more interesting: it causes similar effects in Nav4x, MacIE5.5 and WinIE5.

These funny colors are compatible with a legacy Nav4x behavior (see NS_LooseHexToRGB in nsColor.cpp). They only happen in quirks mode. In strict mode, colors that are not recognized are ignored. For a complete list of HTML colors, see http://developer.netscape.com/docs/manuals/htmlguid/colortab.htm Adding the CSS2 and CSS3 system colors to that list would be against the spec. Closed as Invalid.

Adding 'verifyme' keyword

Mozilla follows the spec thus this bug is invalid. Marking as Verified.