> Fong has become afflicted by a very specific kind of color-blindness, which he wishes urgently to cure

Maybe it's because I have trouble conceptualizing the idea of seeing a new color, but the risk to reward on seeing this doesn't seem worth it.

TL;DR: scientists use lasers/lenses to project "olo," the new color, into your focal point

Related: wikipedia.org/wiki/Impossible_color

Unrelated fact: you can smell/taste more distinct flavors (billions) than viewable colors (millions).