Not the rainbow I was looking for

This colourful shelf of files is up on the top floor of the office, in a store-room. I'd gone up there to get a better view of an actual rainbow, because there's a door that leads onto the roof with a great view. However since I'd last been up there someone had piled so many boxes of miscellaneous paperwork in front of the door that it wasn't going to be worth trying to get it open in time. Thwarted in my original plan, I had a look around while I was up there and thought this rather more bureaucratic rainbow would have to do as a substitute.