I somehow managed to accidently take this pic while working above a dark ceiling. I may have had the flash on, could be something to do with the image it made. Looks kinda outer spacey.
Speaking of weird pics, do you believe in this one? Supposedly an airbrush painting. Hmmm.. http://www.drublair.com/comersus/store/workshops/tica.htm
Well, red green blue and violet are the same colors in the auroral borealis. So you probably have something similar happening there. I don't know how, or why, but those are the exact colors you have.