Here's a few themes. Sorry, but you do have to install a GTK engine. Instruction on installation are in the link to the engine.
I'm trying to create something different.
Feel free to hack them up if you want to improve them.
These theme have a handful of features you wont find in other engines. I've borrow from a few other engines to get the look I have. Ubuntulooks for the radio buttons and check boxes. Most of the code came from clearlooks.
You'll notice that the background stuff is matte while prelight stuff has some gloss to it.
I think there's a beryl emerald theme called union that would probably look better than the metacity that I provided. Just search this site.