I call this: "the black paradox" If a  black man is blind,is he more black?.
What is this about the black paradox?
If a black man is blind, his mind will refuse to see images. Besides, he can create a different flow of wisdom based on his limited knowledge and experiences.
I think what you are saying is true for all blind folks. It doesn't matter about their skin color because they can't even perceive colors in general.