Index: src/wp-admin/css/colors/_mixins.scss
===================================================================
--- src/wp-admin/css/colors/_mixins.scss	(revision 41930)
+++ src/wp-admin/css/colors/_mixins.scss	(working copy)
@@ -25,7 +25,10 @@
 					0 0 2px 1px #33b3db;
 	}
 
-	&:active {
+	&:active,
+	&.active,
+	&.active:focus,
+	&.active:hover {
 		background: darken( $button-color, 10% );
 		border-color: darken( $button-color, 15% );
 	 	box-shadow: inset 0 2px 0 darken( $button-color, 15% );