Index: src/wp-admin/css/customize-controls.css
===================================================================
--- src/wp-admin/css/customize-controls.css	(revision 29558)
+++ src/wp-admin/css/customize-controls.css	(working copy)
@@ -232,7 +232,9 @@
 .customize-controls-close:hover,
 .control-panel-back:focus,
 .control-panel-back:hover {
-	color: #2ea2cc;
+	background: #ddd;
+	border-color: #ccc;
+	color: #000;
 	outline: none;
 	-webkit-box-shadow: none;
 	box-shadow: none;
@@ -243,7 +245,7 @@
 	content: "\f335";
 	position: relative;
 	top: 7px;
-	left: 12px;
+	left: 14px;
 }
 
 .control-panel-back:before {
Index: src/wp-admin/css/themes.css
===================================================================
--- src/wp-admin/css/themes.css	(revision 29558)
+++ src/wp-admin/css/themes.css	(working copy)
@@ -460,7 +460,9 @@
 .theme-overlay .theme-header .close:focus:before,
 .theme-overlay .theme-header .right:hover,
 .theme-overlay .theme-header .left:hover {
-	color: #2ea2cc;
+	background: #ddd;
+	border-color: #ccc;
+	color: #000;
 }
 
 .theme-overlay .theme-header .close:focus,
@@ -1398,7 +1400,9 @@
 .theme-install-overlay .previous-theme:focus,
 .theme-install-overlay .next-theme:hover,
 .theme-install-overlay .next-theme:focus {
-	color: #2ea2cc;
+	background: #ddd;
+	border-color: #ccc;
+	color: #000;
 	outline: none;
 	-webkit-box-shadow: none;
 	box-shadow: none;
@@ -1409,7 +1413,7 @@
 	content: "\f335";
 	position: relative;
 	top: 7px;
-	left: 12px;
+	left: 14px;
 }
 
 .theme-install-overlay .previous-theme:before {
@@ -1417,7 +1421,7 @@
 	content: "\f341";
 	position: relative;
 	top: 6px;
-	left: 14px;
+	left: 13px;
 }
 
 .theme-install-overlay .next-theme:before {
@@ -1425,7 +1429,7 @@
 	content: "\f345";
 	position: relative;
 	top: 6px;
-	left: 13px;
+	left: 14px;
 }
 
 .theme-install-overlay .previous-theme.disabled,
Index: src/wp-includes/css/media-views.css
===================================================================
--- src/wp-includes/css/media-views.css	(revision 29558)
+++ src/wp-includes/css/media-views.css	(working copy)
@@ -2773,11 +2773,22 @@
 	font-weight: 300;
 }
 
+.upload-php .media-modal-close:focus,
+.upload-php .media-modal-close:hover,
+.edit-attachment-frame .edit-media-header .right:focus,
 .edit-attachment-frame .edit-media-header .right:hover,
+.edit-attachment-frame .edit-media-header .left:focus,
 .edit-attachment-frame .edit-media-header .left:hover {
-	color: #2ea2cc;
+	background: #ddd;
+	border-color: #ccc;
+	color: #000;
 }
 
+.upload-php .media-modal-close:focus .media-modal-icon:before,
+.upload-php .media-modal-close:hover .media-modal-icon:before {
+	color: #000;
+}
+
 .edit-attachment-frame .edit-media-header .left:before,
 .rtl .edit-attachment-frame .edit-media-header .right:before {
 	content: '\f341';