Why do most pool tables have green cloth on them?
It is believed that pool originated from croquet, this is why most tables are covered with green cloth — just like the grass. There was a different version before 1871, where the cloth was mostly orange. But when there was not enough light, it was hard to see the exact motion of the balls on the table. It often used to lead to arguments among players. The green cloth solved this problem: red and white balls are clearly visible against this background.