Black/Dark Brown Eyes
Born Leader you people are. Your eyes are loaded with melanin. The melanin acts as an insulator for connections between brain cells. The more melanin one has, the quicker their brains may work. So maybe you could rule the world.
People confide in you as they find you agreeable and assertive. May be because you are getting less sleep compared to the people with lighter eyes. Explains why you are so cranky when you get up in the morning! This was revealed by yet another study in the journal Chronobiology International.
You possess great inner and physical strength. Unassertive, timid, egotistical and competitive are the adjectives which define you. And a pilot study reported by the University of Pittsburgh School of Medicine suggests that women with lighter-colored eyes tend to handle childbirth stress and pain better.
They are strong and cautious like people with blue eyes also agreeable and dominant, like people with brown eyes. You have an air of mystery and a quiet self-sufficiency. You are original, creative and perform well under great pressure.
Gray or consider them a lighter version of blue. They are very rare. Dark gray eyes have more melanin in the front of the eyes, while paler, lighter gray eyes have less. People with light gray eyes are considered hard working and have to struggle a bit to prove their capabilities as compared to others, and if you have dark gray areas, you are either exceptionally well balanced or are holding a huge turmoil of emotions inside you.
This is the complicated and unique one. You are hard to describe, spontaneous, confident and independent. Their eyes usually appear to change color from green to brown, or as an iris that has two colors. According to Dr. Matthew Leach of the University of South Australia, people with hazel eyes might have such mixed colors in their eyes due to materials from the bloodstream that were broken down because of liver imbalance.