Ticket #37712: 37712.1.patch

src/wp-admin/css/admin-menu.css

@@ -341 +341 @@
 
 #adminmenu .wp-menu-image img {
         padding: 9px 0 0 0;
-        opacity: 0.6;
-        filter: alpha(opacity=60);
 }
 
 #adminmenu div.wp-menu-name {
@@ -472 +470 @@
         border-right-color: #32373c;
 }
 
-#adminmenu li.menu-top:hover .wp-menu-image img,
-#adminmenu li.wp-has-current-submenu .wp-menu-image img {
-        opacity: 1;
-        filter: alpha(opacity=100);
-}
-
 #adminmenu li.wp-menu-separator {
         height: 5px;
         padding: 0;