You see what I see?

Johann Wolfgang von Goethe (1749-1832), was the forerunner of the current theory of color.

He postulated that color vision depends on the organs of vision (eyes, brain), and also the subjectively to see who has the perceiver.

So and so the view of an object depends on the material of the object, the light falling on it and the particular perception of each person.

Current theory defines color by hue and brightness in the model called HSV.

(Hue, Saturation, Value).