Yes. It's the same principle that is used in both microwave and audio anechoic chambers. The pyramidal spikes on the walls [1] of an anechoic chamber are much bigger equivalents of the nanotube spikes being used for light.
What I think the question is, is whether it's possible to create a surface of light that reflects only a very specific (range of) wavelengths; that would be quite interesting actually. Highly accurate colors and such.
