I nominate @masyl on the post on "Is Indigo ACTUALLY part of a rainbow?" the author has shown a great intellect to show us if the color Indigo was really a natural color or a man made color . Please read this post to see how wonderfully the author has proven that thee color Indigo is really a man made color
read the post here is the link
Is Indigo ACTUALLY part of a rainbow?
https://steemit.com/colorchallenge/@masyl/is-indigo-actually-part-of-a-rainbow