David Christian Berg, author of the "eXperience GTK theme":http://art.gnome.org/themes/gtk2/1058 emailed me showing interest in mthemer, specifically the eXperience plugin. I found that very flattering considering it's his masterpiece and I'm only making quick-hack changes to it.
A number of people have shown an interest in mthemer. I haven't released it because it's not done. It does work but it's just not finished. I haven't written any documentation, tidied up the plugins, finished the GUI, etc. etc. But since all of that may never happen, I am releasing a pre-release of mthemer. You can find it at the "mthemer page":http://starship.python.net/crew/marduk/software/mthemer/
I did start working on a GUI last week. It will be cool when it's finished. You should be able to create your own looks and export them to XML. Whenever it gets done. This is really my first GUI program and, although pygtk does a great job, I find GUI programming tedious, at least for me. But it can be fun. I have enclosed a screenshots of the 2 widgets I've pretty much finished.