Hopefully those pictures are clear enough to get an idea. The metal finish is disappearing it looks like. I have some of that on my MBP around the edges on the topside, never thought much of it. Figured it was cosmetic. However, I just bought this battery about a month and a half ago. What's the deal, is there a heat issue? Is this somewhat normal? MBP from 2008, right before unibody update. Thanks for any help! I hope it's nothing.