Oh, well, explains why I have no idea what it is.The colours red, green and blue of the lights usually put on these things to look "cool" to those people who like shinny lights in/on their computer.
My son recently built his own gaming computer and was upset at the blingyness of some of the parts. I told him he wouldn't have to look at them if he hadn't bought the transparent sided case. I think the point was a bit lost on him, but it brings a tear of joy to my eye to have the kids building their own machines. Ah, the memories.