If you've been browsing the online forums where Sonic the Hedgehog fans are active, you've undoubtedly come across an odd meme that's trending: the Bootleg Metal Sonic Plush laughing "hue hue hue." ...

Human perception of color is regulated by three types of cone cells in the eye. By artificially stimulating just one type with a laser, researchers and study participants experienced a new color ...

This is because visual systems vary from person to person. Moreover, an object’s color may appear differently against different backgrounds or under different lighting. These facts might naturally ...