― Although green is one of the commonest colors in the world, it is so difficult to find animals in pure green color. ∙ Green is the color of aliens as depicted on books and movies. It is also, of course, the color of Incredible Hulk. Green is a color used to describe plants or the ocean. Green can also describe someone who is inexperienced, jealous, or sick. A person who looks ill is describes as “green around the gills”. In the US, green is a colloquial for money. ∙ 1.) Harlequin [...].