Hey, I din't want to touch off another nuclear disaster, so I hit mark as answered, but it's not.
If your theme is public, it should be accessible in the kuler panel. A way to check if your theme is public is to see if it is accessible via the url given on your theme page on kuler. If you can access it via that url without signing in, the theme is public. Try searching the theme on kuler website and verify if it is available there. You can use the theme Id available as the last part of the url to search the theme as well. You can alternatively download the theme as ASE(there is a download button on the theme details page once you are logged in) and can get the theme with AI CS5 as described in the post:http://forums.adobe.com/thread/784355?tstart=0. Please reply to this post if you still face problems.
All's Well. I discerned the utilization of the Kuler panel in Illustrator