Sandy, if the keyboard still works just learn to love the pink spots and if it doesn't, well, then you need a new keyboard. The acetone that is in nail polish remover will probably mess up your keyboard as badly or worse than the nail polish.
The Wal-Monster in my area has some keyboards that don't seem to be too expensive. A used one might be available too, ask around, if you can't see your way in spending the $$$ for a new one.
Or maybe you can just paint the rest of the keys pink?
Sorry,
hugs & smiles
helen
PS - In a past life I was a plastics engineer.