Index: wp-admin/customize.php
===================================================================
--- wp-admin/customize.php	(revision 20951)
+++ wp-admin/customize.php	(working copy)
@@ -68,8 +68,7 @@
 		<div class="wp-full-overlay-sidebar-content">
 			<div id="customize-info" class="customize-section<?php if ( $cannot_expand ) echo ' cannot-expand'; ?>">
 				<div class="customize-section-title">
-					<span class="preview-notice"><?php _e('You are previewing'); ?></span>
-					<strong class="theme-name"><?php echo $wp_customize->theme()->display('Name'); ?></strong>
+					<span class="preview-notice"><?php echo sprintf( __( 'You are previewing %s' ), '<strong class="theme-name">' . $wp_customize->theme()->display('Name') . '</strong>' ); ?></span>
 				</div>
 				<?php if ( ! $cannot_expand ) : ?>
 				<div class="customize-section-content">
Index: wp-includes/css/customize-controls.dev.css
===================================================================
--- wp-includes/css/customize-controls.dev.css	(revision 20951)
+++ wp-includes/css/customize-controls.dev.css	(working copy)
@@ -115,6 +115,7 @@
 	font-size: 20px;
 	font-weight: 200;
 	line-height: 24px;
+	color: #333;
 	display: block;
 	text-shadow: 0 1px 0 #fff;
 }