Bug 609422 - Insert and Format entries in menubar in MailNews Compose window enable on hover

r=dao a2.0=benjamin

toolkit/themes/gnomestripe/global/menu.css

@@ -86,7 +86,7 @@ menubar:-moz-lwtheme > menu:not([open="true"]) {
   text-shadow: inherit;
 }
 
-menubar > menu[_moz-menuactive="true"] {
+menubar > menu[_moz-menuactive="true"]:not([disabled="true"]) {
   color: -moz-menubartext;
 }