Rainbows represent the LGBTQ community. When you're "blue" you're down in the dumps. I think there are political groups abroad in which ORANGE is involved. I'm not sure. CHARTREUSE combines green and yellow so that would be the color of an envious coward. Right? Pink is used to represent breast cancer and October is breast cancer awareness month. They give out little pink ribbon pins. I wonder why pink? Purple is the color of Royalty. And so it goes.