The color green came to take on a symbolic role in religion and religious art. The prophet Mohammed declared green to be his favorite color and wore a robe of it, green is even seen as the color of Islam. An early Persian mosaic of the Three Magi shows green, worn as a cloak, as the virtue of penitence personified in a color. The Holy Ghost is often portrayed as a white dove against a green backdrop as early Christians often associated green with faith. The green knight was the one who quested for the holy grail. Green has been seen as the color of learning, of youth, of tranquility, of righteousness, of the hero, of great quests, of new beginnings, of Spring, of the day Sunday in the catholic church, of uncontrolled sexuality, of philosophy, of the supernatural, of immortality, of poison, of healing, of fertility, of birth and of rebirth. Throughout the ages in different cultures green has taken a prominent position in art and literature, used to symbolize all of the above.
Although we associate green with the coming of spring we also say of those who look sickly that they are “turning green.”
Even our money in the United States is green in color and in slang is referred to as just “green.”