Index: wp-includes/css/buttons.css
===================================================================
--- wp-includes/css/buttons.css	(revision 51529)
+++ wp-includes/css/buttons.css	(working copy)
@@ -250,7 +250,7 @@
 .wp-core-ui .button-primary.focus,
 .wp-core-ui .button-primary:focus {
 	background: #135e96;
-	border-color: #135e96;
+	border-color: #02163a;
 	color: #fff;
 }