Those wings are made up of tiny scales that form one large surface area, which absorbs 99.94% of the light that hits it, according to ScienceAlert. This is similar to the difference between black and blue solar panels. Black solar panels are black as a result of each cell being a single silicon crystal that absorbs almost all light. This improved light absorption is why black solar panels are more efficient than blue panels. With less light being reflected, the silicon slabs effectively absorbed more light, increasing the short-circuit current or absolute maximum current produced by the slabs by up to 66%.