User Agent: Mozilla/5.0 (Windows NT 10.0; rv:48.0) Gecko/20100101 Firefox/48.0 Build ID: 20160726073904 Steps to reproduce: On a fresh installation of Windows 10 (32 bit) I installed Firefox 48.0 with no settings import. Actual results: When I press ALT the menubar appears but the item title text (File, Edit, View...) is black. If you click on a menu the menu drops down and the items are properly coloured. Expected results: A light colour should be used for the menu bar text to make it readable. Additionally, all white background/dark text should be avoided, eg: the certificate name to the left of the URL bar and also the bottom-left link popup (not shown in screenshot) is also white background/dark text when FF is in high contrast mode. Why:People with broken eye retinas like me have real problems with large splodges of light or reading black text on a white background. Aesthetics and graphic design necessarily take a back seat for us.

about menu, the text color is defined to be black here. https://dxr.mozilla.org/mozilla-central/rev/6b65dd49d4f045c0a9753ce60bdb4b7b4aaedcf8/browser/themes/windows/browser-aero.css#374 > #main-menubar:not(:-moz-lwtheme):not(:-moz-window-inactive) { > background-color: rgba(255,255,255,.5); > color: black; > } background-color rule has no effect for '-moz-appearance: menuitem;' (not sure why tho...) https://dxr.mozilla.org/mozilla-central/rev/6b65dd49d4f045c0a9753ce60bdb4b7b4aaedcf8/toolkit/themes/windows/global/menu.css#17 > menu, > menuitem, > menucaption, > .splitmenu-menuitem { > -moz-appearance: menuitem; > -moz-box-align: center; > color: MenuText; > font: menu; > list-style-image: none; > -moz-image-region: auto; > } anyway, we should use system color instead of "black" or "background-color: rgba(255,255,255,.5);".

Dão, can we look at this as part of your work on high-contrast stuff on Windows?

In fact (I'm being slow going through bugmail post-PTO...), looks like the offending CSS no longer applies on win10 as part of bug 1008225? Not sure if the same problem applies in HCM on win7 - presumably not anymore, because post-bug-1008225 the CSS is in a glass container. Dão can you verify and close as dupe/wfm if I'm right?

Going to take care of this in bug 1022547.