> and you can recognize colors easily even in your peripheral vision.

That's not true as far as I know. I think we see color only in the middle of our focal and our brain merely remember colors for the periphery.

> They are typically 40–50 µm long, and their diameter varies from 0.5 to 4.0 µm, being smallest and most tightly packed at the center of the eye at the fovea.

https://en.wikipedia.org/wiki/Cone_cell#Shape_and_arrangemen...