Noctua used to be quite stubborn with its unique color scheme but these days they offer black fans and are working on more colorful options as well. TechPowerUp visited Noctua at Computex and got to see the latest Project Chromax products. Seems like Noctua is jumping on the RGB LED train with a line of heatsink covers:
These devices strap onto your heatsink fin-stacks, and do not much more than light up a bunch of graphics. Initially, Noctua will launch heatsink covers for the NH-D15S and the NH-U12S coolers.