I couldn't find a set of M3 cap bolts or screws in two places I went to. :) I didn't feel like going to one place which I think might have them as it was out of the way. Getting their colour to silver takes only a couple of seconds each with some sand paper and the dremmel. It's shaving off 1/3 their height that takes a bit more time. I had to keep pausing and cooling them off as they'd get extremely hot - which can cause them to discolour. :)

Bruno