There is a rainbow colored Tree. . .
The Eucalyptus Deglupta is a tall tree, otherwise known as the rainbow eucalyptus. It is found in the northern hemisphere, in places like New Britain, new guinea etc.
The tree sheds patches of its bark and exposes a fresh bright-green bark. Eventually the color and then darkens. It it will through blue, purple orange and maroon hues. The tree sheds its bark at various times throughout the year, which gives it its rainbow color.