Silver eye color is also quite rare, although many consider silver eyes to be a variation of blue eye color. Like blue eyes, silver eyes are the result of a very low amount of pigmentation in the eye, which reflects a gray-silver appearance. Silver eye color is most common in eastern European countries, and is one of the rarer eye colors worldwide
Amber is a very rare eye color and also known as ‘wolf eyes’, since amber eye color is very common in wolves. Amber eyes can be defined as the ones having a strong yellowish/golden and russet/coppery tint. The reason behind amber eyes is the deposition of ‘lipochrome’, the yellow pigment, in the iris.