You might say it’s just a pigment of your imagination ...

Colloidal photonic glasses offer an appealing way to produce vivid colors without any chemical dyes—but so far, a stubborn optical effect has long prevented them from generating a true red color. Now, ...

Genetics plays a big role in color blindness. Find out why men are more at risk, and other factors that cause the condition. The human eye sees colors based on the wavelengths of the light radiating ...