Suitably geeky RGB karate family
In our family, we've got one person with a #000000 belt, one with a #FF0000 belt, one with a #00FF00 belt, one with a #0000FF belt, and one with a #FFFFFF belt.
It doesn't get more fundamental than that. We could be a CRT.
However, I'm sure that soon, son #1 will get promoted to #800080 shortly, so we'll have to switch over to CMYK.