diff --git a/wp-admin/admin.php b/wp-admin/admin.php
index 4eaa5b117..719ab1e5d 100644
--- a/wp-admin/admin.php
+++ b/wp-admin/admin.php
@@ -67,9 +67,6 @@ $time_format = get_option('time_format');
 
 wp_reset_vars(array('profile', 'redirect', 'redirect_url', 'a', 'text', 'trackback', 'pingback'));
 
-wp_admin_css_color('classic', __('Blue'), admin_url("css/colors-classic.css"), array('#073447', '#21759B', '#EAF3FA', '#BBD8E7'));
-wp_admin_css_color('fresh', __('Gray'), admin_url("css/colors-fresh.css"), array('#464646', '#6D6D6D', '#F1F1F1', '#DFDFDF'));
-
 wp_enqueue_script( 'common' );
 wp_enqueue_script( 'jquery-color' );
 
diff --git a/wp-includes/default-filters.php b/wp-includes/default-filters.php
index 668f389de..0582dcddc 100644
--- a/wp-includes/default-filters.php
+++ b/wp-includes/default-filters.php
@@ -225,3 +225,6 @@ add_action( 'init',               '_show_post_preview'         );
 
 // Timezone
 add_filter( 'pre_option_gmt_offset','wp_timezone_override_offset' );
+
+// Admin Themes
+add_action('admin_init', 'register_admin_color_themes', 1);
diff --git a/wp-includes/general-template.php b/wp-includes/general-template.php
index 48cb814a4..c21880185 100644
--- a/wp-includes/general-template.php
+++ b/wp-includes/general-template.php
@@ -1995,6 +1995,15 @@ function wp_admin_css_color($key, $name, $url, $colors = array()) {
 	$_wp_admin_css_colors[$key] = (object) array('name' => $name, 'url' => $url, 'colors' => $colors);
 }
 
+/**
+ * Registers the default Admin color themes
+ *
+ * @since 3.0.0
+ */
+function register_admin_color_themes() {
+	wp_admin_css_color('classic', __('Blue'), admin_url("css/colors-classic.css"), array('#073447', '#21759B', '#EAF3FA', '#BBD8E7'));
+	wp_admin_css_color('fresh', __('Gray'), admin_url("css/colors-fresh.css"), array('#464646', '#6D6D6D', '#F1F1F1', '#DFDFDF'));}
+
 /**
  * Display the URL of a WordPress admin CSS file.
  *