Originally Posted by Poseidon
It's extremely difficult to figure out color backwards like that. The only 100% for sure color combination is chestnut + cremello = palomino, anything else could really have an extensive list of colors because, for example, a horse could be a buckskin dun, but not pass on ANY of of the modifying genes (agouti, cream, and dun) to a foal.
And even that isn't 100%. If that chestnut carries pearl.... LOL