 Another common form of Color Objectivism is that colors are objective (mind-independent), properties of material bodies and light sources, whose natures are “hidden” from us, and require empirical investigation to discover. This theory is commonly known as Physicalist Color Realism  but I shall use the title Reductive Color Physicalism. (The properties that constitute the colors, for Color Primitivism, are “physical” in one good sense of the term.)