diff --git a/bin/noblogs.in b/bin/noblogs.in
index 5ea6b39a39c91b86bb2ef857774cf3821b573f0d..c0138d26f99cbb9b135b4358994159986bfb692a 100755
--- a/bin/noblogs.in
+++ b/bin/noblogs.in
@@ -90,6 +90,10 @@ Known commands:
    wp-piwik-clear-config BLOG
       Clear the configuration for wp-piwik plugin.
 
+   copy-custom-css BLOG
+     Copies the Custom CSS config to the standard Wordpress Customizer config,
+     then removes the old (options).
+
 <?php
   exit(1);
 }
@@ -594,6 +598,30 @@ function do_uninstall_plugin($args){
     }
 }
 
+function do_copy_custom_css($args){
+    foreach ($args as $arg) {
+        $blog = noblogs_get_blog($arg);
+        if (!$blog) {
+            echo "{$arg}: blog not found.\n";
+            continue;
+        }
+        switch_to_blog($blog->blog_id);
+
+        $custom_css = get_option('custom-css');
+
+        if (!$custom_css){
+            $wp_css = wp_get_custom_css();
+
+            wp_update_custom_css_post($wp_css . "\n" . $custom_css);
+
+            delete_option('custom-css');
+            delete_option('custom_css_setting');
+        }
+        
+        restore_current_blog();
+    }
+}
+
 // Command-line parsing.
 $cmd = $argv[1];
 if (!$cmd) {