COLOR THEORY
Color is simply…well…actually there have been a ton of thicker books written about color. For our purposes, color is what you are trying to copy from life onto an empty, terrifying little piece of expensive paper, with no guarantee that you’ll ever show the result to anyone, using only some "color juice" in a tube, a little brush and some water.
ONE WORD...COLOR WHEEL
OK, that's two words, but if I had used one word it would be this...