I went to the Apple store last night to compare the black and white MacBooks side by side. I've read through several MacBook threads here and I know many claim that the 'Books can be cleaned using Mr. Clean Magic Erasers. However, what I am curious about is the matte plastic on the inside of the MacBook. On the white one, it's not really white but dull, off-white, almost grey-ish. Is this normal? Does it look this way right out of the box? Edit: and do all black MacBooks end up like this??