Index: wp-admin/css/theme-editor.dev.css
===================================================================
--- wp-admin/css/theme-editor.dev.css	(revision 12498)
+++ wp-admin/css/theme-editor.dev.css	(working copy)
@@ -34,11 +34,18 @@
 }
 
 .nonessential {
-	font-size: small;
+	font-size: 11px;
+	font-style: italic;
+	padding-left: 12px;
 }
 
 .highlight {
-	padding: 1px;
+	padding: 3px;
+	font-weight: bold;
+	-moz-border-radius: 8px;
+	-khtml-border-radius: 8px;
+	-webkit-border-radius: 8px;
+	border-radius: 8px;
 }
 
 div.tablenav {
Index: wp-admin/theme-editor.php
===================================================================
--- wp-admin/theme-editor.php	(revision 12498)
+++ wp-admin/theme-editor.php	(working copy)
@@ -155,8 +155,8 @@
 	foreach ( $themes[$theme]['Template Files'] as $template_file ) {
 		$description = trim( get_file_description($template_file) );
 		$template_show = basename($template_file);
-		$filedesc = ( $description != $template_file ) ? "$description <span class='nonessential'>($template_show)</span>" : "$description";
-		$filedesc = ( $template_file == $file ) ? "<span class='highlight'>$description <span class='nonessential'>($template_show)</span></span>" : $filedesc;
+		$filedesc = ( $description != $template_file ) ? "$description<br /><span class='nonessential'>($template_show)</span>" : "$description";
+		$filedesc = ( $template_file == $file ) ? "<div class='highlight'>$description<br /><span class='nonessential'>($template_show)</span></div>" : $filedesc;
 
 		// If we have two files of the same name prefer the one in the Template Directory
 		// This means that we display the correct files for child themes which overload Templates as well as Styles
@@ -182,8 +182,8 @@
 	foreach ( $themes[$theme]['Stylesheet Files'] as $style_file ) {
 		$description = trim( get_file_description($style_file) );
 		$style_show = basename($style_file);
-		$filedesc = ( $description != $style_file ) ? "$description <span class='nonessential'>($style_show)</span>" : "$description";
-		$filedesc = ( $style_file == $file ) ? "<span class='highlight'>$description <span class='nonessential'>($style_show)</span></span>" : $filedesc;
+		$filedesc = ( $description != $style_file ) ? "$description<br /><span class='nonessential'>($style_show)</span>" : "$description";
+		$filedesc = ( $style_file == $file ) ? "<div class='highlight'>$description<br /><span class='nonessential'>($style_show)</span></div>" : $filedesc;
 		$template_mapping[ $description ] = array( _get_template_edit_filename($style_file, $stylesheet_dir), $filedesc );
 	}
 	ksort( $template_mapping );