I've got them hosted on my server. Just go to settings and paste the URLs in to the theme thingy.
You'll have to do it everytime you login though as these aren't 'official' cb theme options. Enjoy. FYI - Topaz and Sapphire were favorites among the people these were designed for.
Topaz: Preview Set Emerald: Preview Set Sapphire: Preview Set Amethyst: Preview Set Ruby: Preview Set Death: Preview Set