Rainbow EucalyptusThe bark is smooth, but flaky as it sheds layers on various places at different times along the tree, revealing new colors and keeping up the appearance of a rainbow. As the newly exposed bark slowly ages, it changes from bright green to a darker green, then bluish to purplish, and then pink-orange. Finally, the color becomes a brownish maroon right before exfoliation occurs. Since this process is happening in different zones of the trunk and in different stages, simultaneously, the colors are varied and almost constantly changing. As a result, the tree will never have the same color pattern twice, making it like a work of living art.