I have a clear plastic shell. I don't know exactly what sort of plastic it is, but it's probably not polycarbonate; it was cheap (bought it at the dollar store).
I need to paint this with something that will make it look like smoked plastic. Some sort of translucent black paint? I will have lights (LEDs) inside, and the goal is that these lights should show up clearly when lit, but be completely invisible when dark.
But dammit Jim (*), I'm a roboticist, not a modeler. I haven't painted any plastic since I was a kid. So I'm hoping some kind soul here can recommend a specific paint and application technique that is most likely to work, even in the hands of a newbie such as myself.
(*) That's a Star Trek (original series) reference, for the folks here too young (or insufficiently geeky) to remember!