Thanks for the quick response!

I think the acetate idea is probably the easiest, however do any of you think this might get hot? I mean, if there isn't anything there in the first place, is it a good idea? Although it would probably help protect from dust and whatever else... considering it's replaced or cleaned once in a while. As for accessing the underneath of the keyboard, the PBook that I'm probably going to get is a new one, and on Apple's website under Developer/PBook 15inch, its says the keyboard used to be removable in order to insert RAM, however now it is not. Is this true or did I just misunderstand?
Another question: if the keyboard usually lights up blue, what if I want it red... what are the chances it ends up purple?