[eitland]

The color coded rings on resistors is a mightily bad idea, at least as implemented on resistors.

I'm not that colorblind, I see traffic lights, fruits between leaves and other things others have problems with, basically everything except resistor rings and distant lighthouse colors (yes, the colors on a map make sense, but trying to decode them IRL is as hard as resistor codes.)

[Doxin]

The worst thing is resistors with weird background colors for the color bands. I can usually figure out beige resistors, but the blue ones? no chance of getting those right.