The color that is imparted to materials and is seemingly observed by the human eye corresponds to the electromagnetic waves that are reflected or transmitted and not absorbed, meaning that one of its attributes(color), that is not precisely the material's property, is actually the thing that it leaves or doesn't hold on to. This is precisely what some philosophies say about life that a human being is defined by not what he/she has but what he/she gives? Remarkable isn't it?
Just tell me if this makes sense or is even worth being astonished by or not?