Bug 164608 - Menu bars in background windows should be grayed out (disabled appearance). r=neil

toolkit/themes/winstripe/global/global.css

@@ -165,6 +165,10 @@ resizer[dir="bottomright"] {
   cursor: se-resize;
 }
 
+window:not([active="true"]) menubar > menu {
+  color: ThreeDShadow;
+}
+
 /* XXXBlake yeah, shoot me -- these don't belong here.  I'll move them later. */
 
 sidebarheader {