So far, there's been standard and mobile.
I didn't know that this version of VB had it, but it has a quick skin builder in the Admin controls.
So I created one.
Mainly, it was because my new laptop with Windows 10 puts a blue tint on everything that I can't stand. For me, the blue forum skin here was overkill. I couldn't focus on it.
The new one called "Experimental" is a low contrast gray theme.
If you have 7, Vista, or XP running the classic theme, things should look gray. It's very nice on these OS's.
In 10, it still looks blueish, though.
No idea what it'll do to a Mac. Maybe Jesus will let us know.