Color is able to be dealt with only when it is realized that it is, in its basic character, unstable (in contrast to form).
Color is all. When color is right, form is right. Color is everything, color is vibration like music... everything is vibration.
Color is a plastic means of creating intervals. . . Color harmonics produced by special relationships, or tensions. We differentiate now between formal tensions and color tensions, just as we differentiate in music between counterpoint and harmony.
Color is an action, not a thing. It is not fixed as a noun, with properties and differences... instead, it acts as a verb: Yellow can 'redden' and red can 'yellow'.
Color is a combination of light, darkness, and intensity. As such, 'red' is not a color, but only one aspect, the hue, of some partially defined color.