Color
it is a white one. i am not exadurating a little bit. I could literally peel off a thin film. like skin. really the best way to describe it was skin coming off a sunburn. and no, it would not be easy to miss.
the strange thing is, the underneath of it, felt like hard plasitc, not rubbery, kind of like the old ibooks. I took it to the apple store, and they gave me no hassle at all. just swapped it out. they said they had never seen this before.
I was shocked as I thought this was made with jusrt a peice of plasitc, but now i know that it is a rubbery film over the top of plastic. this may also be where the discoloration people have spoke of is coming from. this top film may be the problem.
As rthe above poster is saying, the caase seperated, no, this is not the case, the CASE was fine, the computer had no other problems, and this all happened within one day. NO sun. in an office. it was like a thin film coming off the palm rest area. If i had pulled it, I could have probably pulled all the greyish color off the inside of the case.
andreas