Color Theory Class in the Bark of a Tree

I'm teaching another color theory class and when I discovered this tree in the woods last weekend, all I could think about were the students who are working with color.  The bark on this tree was alive with color.  My camera caught some of the color but not all, or its intensity. Standing there in the woods I felt like I was looking at a rainbow, only instead of it being in the sky it was there, on these two tree trunks.  It made me think about the importance of what we are learning in class as the color was anything but what you might assume a tree would be.