Blasthoff wrote:
OK, but what if the nail polish dissolves the paint or worse starts melting the key itself? I ask that because it actually is quite possible to disolve one or both as nail polish often contains acetone which is a plastic solvent. Test it first!!
Better yet just get a set of replacement keyboard letters to use if, when or as the originals wear off. Yes, they sell them, check Amazon.
Belated thanks. I found them on Amazon.es. Relatively cheap too: