What is the color of rain? Trickling through the trees, it forms dazzling jewels on the tips of leaves and needles. But the real color of rain is green. Rain makes the forest possible. It makes the gardens grow. It lets the bean vines reach for the skies. Places where it rains are green and lush. Rain makes picking fresh herbs in the dead of winter possible. It comes down to this axiom: no rain, no green.