I had a chance to eat lunch downtown today... I took a bunch of images of the view, and decided to try to capture the shadows on the ground. I didn't see those interesting reflections until hours later in post-production. It's what I didn't see at the time that makes this one of my favorite photos. The reflections on the ground are coming from the awning on top of the building I was in... this prismatic effect only happens for a short period every day.