Actually, with the new version 8.0 they added transparent title bar functionality. I think it's less of a pain now to uninstall, too.
I just tried their 2 main sites and they were down, though. If you can't get it that way, do a search for "Vista Transformation Pack 8.0" and you will find plenty of places to download it.
Just keep in mind that this doesn't just change the color of your windows, it changes almost everything on your computer, including login screen and placing a start orb where your start button was.