Hi everyone, I have a 2008 Macbook Alum. Unibody and the palm wrest has discoloring on both sides of the trackpad. The area on the right (pictured) seems to fit the palm shape of the hand. The area on the left (not pictured) is much smaller and less visible. The area doesn't feel any different than the unaffected area like a scratch might would. I'm hoping someone might have some idea how to correct the discoloring. I have wiped the area down with a damp cloth but it did not come off. Thanks for your help!