Elmer and the Rainbow (Elmer series)

Elmer and the other elephants are waiting for the storm to end so they can see the beautiful, colorful rainbow. But something dreadful has happened: the rainbow has come out too soon and has lost its colors! Elmer decides to give his own colors to the rainbow, but to do that, he must find where it touches the ground. But what will happen to Elmer if he gives the rainbow his own colors? Will he lose them for ever?