Tarantula Blue

Structural colors are on the rise. Structural coloration is the production of color by nano structured surfaces, rather than pigments. Peacock feathers and butterfly wings are examples of structural color.
Lately we've seen many research papers appearing on the subject. A recent one is here, by the Karlsruhe Institute of Technology in Germany. Their work is a follow up on the work we reported on earlier here. After imitating Tarantula blue, they now discovered a way to make the color consistent when viewed from different angles. 

Structural colors aren't ready for prime-time yet. But that only seems a matter of time...