I got permission to get onto the roof of the Sirna facility in Boulder to take pictures. I had been planning to do a panorama for some time, and saw some colorful clouds developing. I got up to the roof in time and got the picture. I also noticed an interesting sign (someone working there apparently thought they were “God”). By the time that I got the images for the Boulder Flatirons panorama the colors were gone, and the light had gone flat.