Ticket #26607: 26607.3.patch

src/wp-admin/includes/misc.php

@@ -571 +571 @@
                 $_wp_admin_css_colors = array_filter( array_merge( array( 'fresh' => '', 'light' => '' ), $_wp_admin_css_colors ) );
         }
 
-        $current_color = get_user_option( 'admin_color' );
+        $user_id = ( isset( $_GET['user_id'] ) ) ? (int) $_GET['user_id'] : get_current_user_id();
+        $current_color = get_user_option( 'admin_color', $user_id );
 
         if ( empty( $current_color ) || ! isset( $_wp_admin_css_colors[ $current_color ] ) ) {
                 $current_color = 'fresh';