Butterflies are probably the most beautiful creatures on earth. Those colorful wings captivates you with its beauty.
Have you ever thought whether those magical patterns are formed by true colors??? In fact, these clever insects trick you into believing that their wings possess true colors. The wings have what can be called biophotonic crystals that scatter light in some intriguing ways. Something our 21st century physicists have hard time replicating in labs!
These are some ridges of nano dimensions found on the surface of the wings. These creatures have been exploiting the potentials of nanotechnology for the past 30 million years!!!!
What you see here is not some fabric... but the wings of a butter fly.
I found more details about this here. You may want to take a look at this site!