Breeding Eye Color

[Kayaine]

Is there a way to breed for eye color? Also, what eye colors are available. For the most part, I've only found brown eyed horses, but I just found one with green eyes. Are other eye colors a recessive trait?

[Syn]

There is one gene that changes the color of a horse's eye without altering the coat at all, the recessive tiger eye gene. That's what caused the green eyes you saw. A horse needs to be homozygous to express tiger eyes unless they are champagne. Horses that only carry one copy of the gene will be obvious on champagnes.

Double dilutes (cremello, perlino, smoky cream, brown cream/sealino/whatever that color is) always have blue-gray eyes by default unless they are tiger eyed.

Other than that, shades of brown are all there is.