The term "green eyes" refers to a person's eye color, specifically when their irises are green in appearance. Green is one of the most common eye colors and can range from light to dark shades of green. The exact genetic makeup that results in this particular eye color is a combination of two different pigments: chlorophyll (which gives the eyes their bright green hue) and lipochrome, which contributes to the base color of the iris. Green-eyed individuals are often associated with being calm, trustworthy, and loyal - however these traits can vary from person to person just as eye colors do.