Blue eyes<span> are blue to lack of melanin, brown </span>eyes<span> are brown due to a lot of melanin and </span>hazel<span> or green </span>eyes<span> have melanin levels in between, and, as such, can appear to take on different hues based on how they blend with the </span>colors<span> people wear, the </span>color<span> of their hair</span>
