You know, now taht I think of it. Ths is going to start confusing new members..... "What do I pick, Ancient, Classic, or Modern??"
"Which is the original?" "What are the differences"
So...maybe you, you being TF, should make a forum styles main page where people can see screenshots of the styles in action and a small description. you could even put the option to change and a feature that says what their current option is on the page itself!