This certainly isn't the first time that researchers have stumbled upon nature using something other than pigment to express color. The vibrant blue of blue jays that we see, for instance, is actually just blue light reflected by the unique structure of the bird's feathers. Similarly, the stunning pure white of the Cyphochilusbeetle - arguably the purest white in existence - is actually achieved with a shell structure so perfect that it reflects nearly all spectrums of light.