For whatever reason, rainbows in my pictures don't seem quite as vivid as in real life. I increased the saturation on the following picture so that you can see the 3 bands of violet that were faintly visible to my eye at one point. (Click on picture to enlarge.)
Meanwhile, on the opposite side of the sky were some pretty dramatic clouds passing in front of the sun.
I always enjoy looking at the ever changing wonders of the sky.