All of you are completely fucking retarded.
Think of a magic eraser as a fine piece of pumice. It sands shit. That's all. If you use it on specific types of plastic, it will leave it either white, or visibly scuffed and distorted color-wise; because all you're going to do is strip a very fine top layer of plastic off your doll.
Nail polish remover is extremely iffy, even when it's acetone free, and you should do research on collector forums before you use it on any sort of plastic anything. Most of the time, it will melt your inanimate waif to varying degrees, and/or turn it into a goo that will never harden.
Don't use acetone on anything plastic ever, unless you want to fuck it up beyond repair. People who say otherwise are idiots.
If you're cleaning off paint, plain rubbing alcohol is the way to go. However, if you think that's going to remove stains, lololololol.
But anyway, here's the safe and not retarded way to fix the stains on your vinyl doll's feet without destroying it in the process:
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