why are some colours commonly found as surnames (white, brown, green) but not others (red, blue, yellow)

Question

And furthermore how does language play a part – I know red (rojas/rossi) is a Spanish and Italian surname but not English

In: 2480

Answer 1

Rossi (reds) and Verdi (greens) are two among the most common Italian surnames

It’s not the colour, but probably more about how easily available to noble families that colour was in that area