DIN, Ostwald, Munsell systems. Without light there is no color to be seen. Distinct interaction with light produce different color. Color results from interaction of light and pigment. Light missing result-black.
Pigment is missing - result is white.
Color receptors of eye accept the light reflected by broccoli, cranberry juice, orange. Transform it to electrical impulses. Brain accept it as color. Light radiant energy travels in waves. 400-700 nm, wavelength determines the color.