I'd like to see a dev board (Arduino, RPi, micro:bit) with V+ lines all silkscreened in red, ground in black, and serial in blue & green. It would make teaching much easier. It wouldn't even be too hard to design, I just never saw it before.
Re: Show HN: How to make full colour PCB art
#11It's not exactly the same thing, but there's an app that does AR overlays of PCBAs [1] to help with debug. I haven't used it, but it's a pretty neat idea.