User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:38.9) Gecko/20100101 Goanna/2.1 Firefox/38.9 PaleMoon/26.3.3 Build ID: 20160629210805 Steps to reproduce: In gtk-widgets.css for a GTK3 theme, I added the following rule: /*************** * menubaritem * ***************/ .menubar.menuitem:hover, .menubar .menuitem:hover { /* ERIC EDITED TOP MENU BAR */ color: #FFFFFF; background-color: @selected_bg_color_top_menu; background-image: none; box-shadow: inset 0 1px 1px 0 shade (@dark_bg_color, 1.8); border:0; } Actual results: When the top menu is clicked on such as "File", the color of the text should be white as defined in the rule above. Expected results: Firefox 47 is not respecting the color property for the hover rule specified for the menubar menuitem top level item. Firefox does respect the background-color, but not the color for the text from this rule. The color setting should be respected. You can change it to any color. It will not respect this setting.

This should be fixed in Firefox 49 by https://hg.mozilla.org/mozilla-central/rev/b7c7214afc0d