Firing lasers into the retina reveals a brand new color

image: UC Berkeley

Olo is the name of a color that, so far, has only been seen by a handful of scientists. The UC Berkeley researchers fired laser pulses into their eyes to energize specific retinal cells. The technique expanded visual perception to reveal a kind "blue-green" hue that they've named olo. It is similar to the above but not quite it.

"There …