ok, so with the pb, you could type :
defaults write 'Apple Global Domain' NSInterfaceStyle Nextstep
and you'd get different windows or something
defaults write 'Apple Global Domain' NSInterfaceStyle Aqua
would put things back to normal.
However, if you do either of these in post PB, you get messages like this in your console:
Jul 15 15:53:12 Terminal[1303] InterfaceStyle nextstep not valid; ignoring.
Well, I took the plunge and took a chance. Here's what you do to correct this (so you don't get error messages, and the system isn't as confused)
defaults delete 'Apple Global Domain' NSInterfaceStyle
And that does it. Do not, under any curmstances, type:
defaults delete 'Apple Global Domain'
You can guess what that might do.
btw, defaults read is a cool method of reading your preferences.
I hope this helps some people out.