I'm also working on my own theme to blend in with the rest of the site. I had it on a few minutes ago, but the logging system was picking up a lot of errors from it (as well as this black theme...), so I removed it for now.
The template system SMF uses isn't very attractive from a designer's point of view, so I might have to write up some tools to make it a lot easier.
BTW, if anything bad happens while I'm away, just change the forum default theme to Babylon.