Because of the installation method, it's difficult to create a good uninstaller. But, I'm working on it. I hope I'll make a better uninstaller on the next version. It is not "Theme of Win 2000", it is "Win 2000 Color Scheme"... So, in fact, it's not a bug. But you're right about that Win 2000 icons also should be optional. I'm working on it now, too.