Horse genetics: please add more coat colors variations to breds

Horse genetics in real life are amazingly complexes and varied and I'm not asking about this since it would take a lot of work...

But right now there are only two possibilities, the foals will always inherit either the mom coat or the dad coat which make breeding boring.

So I suggest to do like Cats & Dogs and put more coat colors variations to breds so the foals can also inherit those "recessive" coat colors and we can get a nice surprise when we breed :)