Like most human traits, blue eyes are determined by genes, and no two people have exactly the same hue. It works a lot like ...

“Caramel hair color requires some maintenance to keep ... Sydney Sweeney’s cool undertones and icy blue eyes call for a caramel shade with a blend of ash-blonde highlights, concentrated ...

But lighter eye color — blue or green ... who lived in Europe about 17,000 years ago had dark skin, dark hair and blue eyes.) The genetic basis for lighter skin seems to have emerged in Sweden ...