Red: stimulates and excites the nervous system, increases adrenaline secretion and improves blood circulation.
Orange: Arouse appetite, help restore health and absorb calcium.
Yellow: It can stimulate nerves and digestive system.
Green: It is beneficial to digestion and body balance, and has a calming effect.
Blue: It can lower the pulse and adjust the body balance.
Indigo: It can harmonize muscles, stop bleeding, and affect audio-visual sense of smell.
Purple: It has inhibitory effect on motor nerve and heart system.
Black: Depression. Cause disease.
First of all, we should understand some feelings brought by color, and then we can better understand it by combining poetry.