Bug 481864 - New tab button doesn't lighten when Firefox loses focus, r=dao

browser/themes/pinstripe/browser/browser.css

@@ -68,7 +68,8 @@
 }
 
 #main-window:not([active="true"]) > #navigator-toolbox > toolbar > toolbaritem,
-#main-window:not([active="true"]) > #navigator-toolbox > toolbar > toolbarbutton {
+#main-window:not([active="true"]) > #navigator-toolbox > toolbar > toolbarbutton,
+#main-window:not([active="true"]) .tabs-newtab-button > .toolbarbutton-icon {
   opacity: 0.75;
 }