The Revolution themes are pretty nice and a lot of work have gone into them. I doubt you will find anything for bbPress that you can easily edit to make it look the same.
Brian Gardner has a bbPress theme for Revolution here:
Or, you can find people who are familiar with Revolution and can create a theme for you, here:
Not exactly what you’re looking for, but the quality of those Revolution themes is so high, you’re going to have a hard time finding something for bbPress of similar quality.
You could also start with one of the bbPress Raw themes: