I recently bought a IBM Model M-13 keyboard; one of the few Model Ms with printed rather than dye-sub key caps. Because replacement black key-caps are next to impossible to come by short of buying another keyboard, I was thinking of giving them a layer of matte clear coat. I was wondering if anyone else has done this before, and if so if they could recommend a brand of paint. Right now I've been thinking of using DuraCoat matte clear (gun paint), but wasnt sure if there was anything better. I'm not entirely sure how I feel about trying Plasti-Dip, although it is nice that I can peal it off if I dont like the way it looks, I'm not sure how it'll stand up to typing, and if I'd be stuck having to spend a day once every few months to peel off the old worn layer and replace it.
On a side note, it is rather disappointing that IBM/MaxiSwitch couldn't manage to ensure that the printing on keys like backspace and shift was straight; even my $20 Microsoft wireless keyboard managed to get the printing right.