Fixed tools button focus color

admin_interface/templates/admin/base_site.html

@@ -259,7 +259,9 @@
     }
 
     /* top-right buttons color on hover -> just a lighten grey */
+    .object-tools a:focus,
     .object-tools a:hover,
+    .object-tools li:focus a,
     .object-tools li:hover a {
         background-color:#AAAAAA;
     }