Yep I own a filly by Big Chex to Cash. Great horse, love her. His color comes from Mr. Gun Smoke. I also have a mare that is out of a daughter to Mr. Gun Smoke who is a sorrel but with all the same white. She is a wicked cool mare too. Love her.
If you decide to breed to BCTC make sure you mare is tested for herda tho as he is a herda carrier.