[flufluflufluffy]

> That means you don't get to see any pure grays -- the closest ones will have bit of blue or yellow tint, depending on the direction of the difference.

OMG I remember as a kid staring at static-y CRT displays, and seeing these faint blue and yellow lines at the borders of them. I’d always wondered why they appeared and why they were specifically blue and yellow. I finally know! (at least, assuming those specific artifacts are due to the same thing)

[adastra22]

specifically on the edges? I would guess that is the phosphor layout, that the 'gray' beam is hitting a blue phosphor but not the red & green, or vice-versa.