Index: src/wp-includes/css/media-views.css
===================================================================
--- src/wp-includes/css/media-views.css	(revision 29446)
+++ src/wp-includes/css/media-views.css	(working copy)
@@ -945,12 +945,24 @@
 	background-color: #1e8cbe;
 	-webkit-box-shadow:
 		0 0 0 1px #fff,
-		0 0 0 2px #1e8cbe;
+		0 0 0 3px #ccc,
+		0 0 2px 7px #5b9dd9;
 	box-shadow:
 		0 0 0 1px #fff,
-		0 0 0 2px #1e8cbe;
+		0 0 0 3px #ccc,
+		0 0 2px 7px #5b9dd9;
 }
 
+.media-frame.mode-grid .selected.attachment:focus {
+	-webkit-box-shadow:
+		0 0 0 1px #fff,
+		0 0 0 5px #1e8cbe,
+		0 0 2px 7px #5b9dd9;
+	box-shadow:
+		0 0 0 1px #fff,
+		0 0 0 5px #1e8cbe,
+		0 0 2px 7px #5b9dd9;
+}
 .media-frame.mode-grid .attachment .check {
 	display: block;
 }