Some say your eyes are the windows to your soul. Are you filled with regret, joy, or sadness? Is your soul troubled or bursting with triumph? Your eyes will reveal it all if someone has the chance to look in them, many believe. What is not talked about as much is why the color of our eyes can vary so much, from where our colors originate and how they came to be. From brown to green and “heterochromia,” the world’s eyeballs reflect our vastly varied genetic landscape.