Index: wp-admin/includes/class-wp-ms-themes-list-table.php
===================================================================
--- wp-admin/includes/class-wp-ms-themes-list-table.php	(revision 17090)
+++ wp-admin/includes/class-wp-ms-themes-list-table.php	(working copy)
@@ -32,10 +32,14 @@
 			$this->site_id = isset( $_REQUEST['id'] ) ? intval( $_REQUEST['id'] ) : 0;
 
 		parent::WP_List_Table( array(
-			'plural' => 'plugins', // @todo replace with themes and add css
+			'plural' => 'themes'
 		) );
 	}
 
+	function get_table_classes() {
+		return array( 'widefat', 'fixed', 'plugins' );	// todo: remove and add CSS for .themes
+	}
+
 	function ajax_user_can() {
 		$menu_perms = get_site_option( 'menu_items', array() );