I bought a kickass white Alienware, thinking I'd just wipe off the dirt on the palm rest.

Turns out, that dark area is not dirt. It's permanent discoloration, a problem that every Alienware R2 owner has faced. Tried everything from hand sanitizer to French soap and magic sponge.
Nothing removes it in the slightest.

Do you know how to clean it? I'm willing to use break cleaner at this point.
Pic rel is not mine, pulled it off eBay.