 So the colors of the rainbow are there every time you see a fire. At the bottom of the flame is blue, at the top of the flame it is red. Now you ask about animals. It turns out that bees can see another color that we cannot, ultraviolet. Now how do you prove that? Well, take a look at a flame. At the bottom of the flame is blue, but if you look very carefully, you'll see that the flame is, for the most part, floating.