>>>> I never said I did research. In fact, I said twice that I haven't done any and virtually know nothing, I'm just using logic. So thanks for clearing that up for me. So I'll change my statement. Any horse can pass on any color in its lineage except cremello. Yes?
Just because a horse has a color in its lineage does NOT mean it can pass on that color. Having a certain colored ancestor does not mean that the horse in front of you inherited the gene to make that color in its offspring.
For example, you were talking about the cream gene. Palominos have one creme gene and one non-cream gene, cremellos have 2 cream genes and no non-cream gene. A cremello might have 2 chestnut grandparents and several chestnut great-grandparents, but a cremello can never produce a chestnut because it does not have that non-cream gene itself to pass on to offspring.
On the flip side, a palomino has one of each gene (cream and non cream), and so bred to a chestnut, a palomino can produce a chestnut foal. That chestnut foal cannot ever produce palomino unless bred to another horse that provides the cream gene, because that chestnut horse does not itself have a cream gene-- doesn't matter that its parent did, the chestnut horse didn't inherit it.
Same with several other colors and patterns-- tobiano, appaloosa, silver, grey, dun, and etc-- a bay horse could have a pedigree loaded with dun ancestry, but that bay horse itself doesn't have the dun gene, so it won't make a dun foal, ever, when bred to a non-dun mate.