"Spectrum" works too in that if you take white light and split it in a prism, it is spread out into its separate but overlapping components of light at different wavelengths.

Good luck finding magenta there. RGB is not modeling the monochromatic light spectrum.

Perhaps "big ball of mud"? "mess"? "cluster f*k"?

Arguing relevant metaphors in HN?! A new low...

If this is a new low, that's news to me.

The top comment chain on the front page 'Plane crashed after 3D-printed part collapsed' is nothing more than arguing about metaphors. This happens all the time in just about every story.