On his good side, yellow is the colour of spirituality, intelligence, eternity and/or wealth. It s the colour of joy. And symbolizes rebirth at spring and Easter. (on the negative side it s the colour for adultery and traitor )
Red is the symbol of love, of course, and passion. But it s also the symbol of life and regeneration, heat, celebration and luxury. On the negative side, red is a symbol of hate or anger
well more or less what i found on google