Index: drupal/modules/color/color.module
===================================================================
RCS file: /cvs/drupal/drupal/modules/color/color.module,v
retrieving revision 1.92
diff -u -p -r1.92 color.module
--- drupal/modules/color/color.module	5 Oct 2010 19:59:10 -0000	1.92
+++ drupal/modules/color/color.module	5 Nov 2010 09:53:25 -0000
@@ -87,6 +87,13 @@ function _color_html_alter(&$vars) {
         // Color module currently requires unique file names to be used,
         // which allows us to compare different file paths.
         if (basename($old_path) == basename($color_path)) {
+           // Change URI paths into local paths; in lack of an API
+           // use realpath() to create an absolute path then convert it
+           // to a relative one.
+           // @todo Use api call for this
+           $baselen = drupal_strlen(realpath('.').base_path());
+           $color_path = drupal_substr(drupal_realpath($color_path),$baselen);
+
           // Replace the path to the new css file.
           // This keeps the order of the stylesheets intact.
           $vars['css'][$old_path]['data'] = $color_path;