How to reverse damage done by nail polish remover without acetone to a laptop keyboard?

Today I was trying to clean my laptop with a nail polish remover (ingredients: ethyl acetate, peg-40, hydrogenated castor oil, panthenol, parfum, d-limonene, geraniol, ci 26100, ci 60725). Not only it didn't get clean, but some white thing remained on the keys.
I tried boiling water and a piece of cloth to make it warm and easier to remove without any success.  

What can be done to reverse the damage?


![enter image description here](https://i.stack.imgur.com/wUZrel.jpg) 




The solvent appears not only to have removed paint on the keys but also to have caused [solvent crazing](http://www.multitechproducts.com/content/Procedures/Aristech-TechBulletin-stress-crazing.pdf) in the plastic itself. Regrettably, there is probably not much that can be done to actually *remove* the crazing, which may have penetrated too deeply to remove by buffing, but you might be able to hide it with a substance such as an oil that has the same index of refraction as the plastic.


If the appearance is unacceptable, you might replace the keyboard, use a plug-in keyboard, or get a keyboard *cover*, such as the [Kuzy Russian Keyboard Cover](http://rads.stackoverflow.com/amzn/click/B00AVBHMPY), specific to the Mac Pro. Individual key stickers would probably not adhere well.


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