Contamination

On earth, red, yellow, and blue add up to black. A bit of black and it will taint the entire palette, no matter how how much white is added.


In the metaphysical, colour is additive, red, green and blue add up to white. With a bit of light, it will shine away the darkness. 


It is not that always with sadness, it will be the one that dominates. A bit of sadness and it will maim the overall feeling of well-being.