Talking about color presents specific problems.
If I say square, or circle, or black, or white, you know precisely what I’m talking about.
If I say gray, or red, or blue, we’re all not necessarily on the same page. How gray? 30%? 50%? How blue? Cerulean? Prussian? Ultra-marine? How red? Carmine? Cadmium? Crimson?
We begin to see the subtleties inherent in color. I don’t mean just the nomenclature. I’m referring to the fact that each of us perceives color in their own specific way.
One color alone means nothing. It acts as in a vacuum, with no other colors to relate to. It is only when colors relate to other colors that the fun begins.
The impressionists were quite exceptional in using additive color. They would put a blue next to a yellow ...