Two Jews are arguing before the Rabbi

J1: "Black is a color!"

J2: "NO! it is not!"

J1: "It is a color!"

J2: "Rabbi, is black a color?"

Rabbi: "Well, sure..."

J1: "See, I told you. And so is white!"

J2: "White is not a color!"

J1: "Rabbi?"

Rabbi: "Well, yes, white is a color"

J1: "See, I told you Moishe, I sold you a color TV"