Are you terminally obsessed with RGB LEDs, and do you have a Fractal Design North XL (or possibly the regular North, I don't have one to test)? Well, get ready to be MILDLY AMUSED.

These feet have tracks for 3mm RGB LED tape, and are about 15mm taller so you can see them. They look MARVELOUS.

Print one of the "Print 1" part and three of the "Print 3" parts. Turn on supports, and use a transparent filament, you dingus! You can embed some 3mm RGB LEDs in place, and re-use the rubber pads from the stock feet.