Scientists at the University of California, Berkeley, who have witnessed the new color they dubbed "olo" described it as a deep, rich blue-greenish hue that can't be seen with the naked human eye.

Brown is the most common eye color worldwide by a large majority. In contrast, green is one of the rarest eye colors worldwide. The color of the eyes depends on how much melanin the eyes contain.

which not only gives them their color but also provides natural UV protection. Hazel eyes are a mix of brown, gold, green, and sometimes even gray. Depending on the lighting, they can even shift ...

But using a new technique called "Oz," scientists at the University of California, Berkeley, have found a way to manipulate the human eye into seeing a brand-new color -- a blue-green color of ...