Champagne coat color in horses is controlled by a single. autosomal-dominant gene (CH). The phenotype produced by this gene is valued by many horse breeders. but can be difficult to distinguish from the effect produced by the Cream coat color dilution gene (CR). https://www.diegojavierfares.com/special-deal-Elektrosatz-Anhangevorrichtung-fur-BJ-2008-2012-E-Satz-ECS-flash-find/