As Gaige said, I'm a forum and web site nub, this is my first one
But as far as I can tell, vBulletin only allows one skin, and doesn't allow users to pick a different skin.
I enabled just about every possible option on this site, except for the documentation warns you 20 times NOT to enable in caps lol, and I'm pretty sure this color scheme option is the only one possible unless I change skins.
I picked this skin after looking at over a hundred different ones. I paid a small amount to license this one, it wasn't free. I liked this one best because it combined a dark, evil kind of look with a high tech look. I also looked at red and many other colors, but I guess I just liked this one best. I hated all the light colored skins and forum examples I looked at, they seemed to cheerful. I intended this site to be fun in an adult way, but not cheerful. I guess I just prefer darker backgrounds to lighter ones on forums.
If you want to see whether any user options permit users to change how this forum looks, please click the FAQ link at the top of this page. Or check out the vBulletin forums or documentation. I'd be happy to turn something on, or enable any options, to make that possible. But after reading and setting every admin option on this site, I don't think it is possible.
I realize not everyone will like every possible choice, and some people may dislike this one, but I'm hopeful that most people like it or can at least live with it for now. If you totally like another skin better, I'd be happy to look at it if you find one and link it here.
Thanks