Green is the color of nature, fertility, life. It is the easiest color on the eye and can improve vision. It is a calming, refreshing color. Grass green is the most restful color. Green symbolizes self-respect and well being. Green is the color of balance. It also means learning, growth and harmony. Green is a safe color, if you don't know what color to use anywhere use green.

~ Color Psychology: Express Your Color Mood, AmO Life Hack