Well, Jonathan Sarfati has written a very interesting article that explains about "Butterfly brilliance".
He says it is due to "dual diffraction gratings which produce two colour signals."
What??? (And, yes, I know, colour is not spelled like that in the US but Dr. Sarfati lives in Australia.)
Anyway, to read his article and learn about 'dual diffraction gratings', which is obviously something that only God (and not evolution) would do
HERE'S THE LINK to butterfly colors, butterfly brilliance, and dual diffraction gratings
