Do you consider the color yellow on your RGB monitor an illusion? (I do)

Same. A fun fact about this is as you increase the bit depth, the percentage of faked outputs actually increases as well. With just 8 bits, you have more 9's than AWS this year!

You can also add a temporal dimension (-> temporal dithering, also known as FRC).

For example if you alternate blue and red every frame at 60~120 FPS, the only thing you'll see is purple.

With red/blue artifacts visible when the viewer’s gaze passes rapidly across it.

I personally wouldn't, but it's close enough that I'm not going to disagree.