So I decided to spend some time dicking around on photoshop. The white on the last two is transparent. Seemed like a cool idea, until the forum background itself is just white and not like something else. :3
Anyway, if you want changes to these, I dunno how quick they'll come. This was the result of what I thought was a good idea at the time. I'm skeptical now, but if you like them feel free to use them. If not, they'll just collect cobwebs on the tubes of the internets.
I like the first one the best, so I'll be using that.
The new Beijing CCTV building is a nice touch. In Chinese, it's associated with a dude squatting and taking a dump.