Index: wp-admin/menu.php
===================================================================
--- wp-admin/menu.php	(revision 19917)
+++ wp-admin/menu.php	(working copy)
@@ -99,7 +99,7 @@
 		$ptype_class = $ptype_for_id;
 	} else {
 		$menu_icon   = 'div';
-		$ptype_class = 'post';
+		$ptype_class = 'custom';
 	}
 
 	// if $ptype_menu_position is already populated or will be populated by a hard-coded value below, increment the position.
Index: wp-admin/css/colors-classic.dev.css
===================================================================
--- wp-admin/css/colors-classic.dev.css	(revision 19917)
+++ wp-admin/css/colors-classic.dev.css	(working copy)
@@ -1470,6 +1470,16 @@
 	background: transparent url('../images/menu-vs.png?ver=20111128') no-repeat scroll -30px -1px;
 }
 
+.icon16.icon-custom,
+#adminmenu .menu-icon-custom div.wp-menu-image {
+	background: transparent url('../images/menu-vs.png?ver=20111128') no-repeat scroll -390px -33px;
+}
+
+#adminmenu .menu-icon-custom:hover div.wp-menu-image,
+#adminmenu .menu-icon-custom.wp-has-current-submenu div.wp-menu-image {
+	background: transparent url('../images/menu-vs.png?ver=20111128') no-repeat scroll -390px -1px;
+}
+
 .icon16.icon-appearance,
 #adminmenu .menu-icon-appearance div.wp-menu-image {
 	background: transparent url('../images/menu-vs.png?ver=20111128') no-repeat scroll 0 -33px;
Index: wp-admin/css/colors-fresh.dev.css
===================================================================
--- wp-admin/css/colors-fresh.dev.css	(revision 19917)
+++ wp-admin/css/colors-fresh.dev.css	(working copy)
@@ -1162,6 +1162,16 @@
 	background: transparent url('../images/menu.png?ver=20120201') no-repeat scroll -30px -1px;
 }
 
+.icon16.icon-custom,
+#adminmenu .menu-icon-custom div.wp-menu-image {
+	background: transparent url('../images/menu.png?ver=20120201') no-repeat scroll -390px -33px;
+}
+
+#adminmenu .menu-icon-custom:hover div.wp-menu-image,
+#adminmenu .menu-icon-custom.wp-has-current-submenu div.wp-menu-image {
+	background: transparent url('../images/menu.png?ver=20120201') no-repeat scroll -390px -1px;
+}
+
 .icon16.icon-appearance,
 #adminmenu .menu-icon-appearance div.wp-menu-image {
 	background: transparent url('../images/menu.png?ver=20120201') no-repeat scroll 0 -33px;