[malaxii]

That's not so clear. The LCD subpixels and CMYK dots may well be below the optical/retina resolution of the eye, in which case it's not really an illusion at all as it's already in the signal data the brain receives. This is quite likely so, because you cannot see those dots individually even with concentration. The same likely goes for squinting your eyes as they become optically unfocused.

In contrast, here the issue is undoubtedly in how the brain interprets the signal data, i.e., an illusion.

[tobr]

Subpixels of modern high resolution screens are below what a normal eye can resolve, but that really isn’t necessary to perceive apparent shades of color. You get the same experience even with a very low resolution RGB screen, where you can distinguish the subpixel elements easily.

It’s not right to say that the balls are “brown”, when they are in fact striped brown and red/green/blue. It’s like saying that a zebra is black if you just ignore the white.