I have some old Apple Extended Keyboard II keycaps which I want to use in kind of funky experimental layouts, where the existing legends won’t correspond at all to the logical key functions, so I want to make them blank black if I can.
Can anyone recommend a dye to use to get PBT as uniform black as possible? Or a few possible options to test would be fine: I’m happy to do some experimenting, though I probably won’t get around to actually doing this for a few weeks at earliest.