Here's a post that's choc 🍫 full of information: the HPS3 variant was discovered in 2020, and has only been seen in French Bulldogs. ☕ Frenchies with the cocoa coat color are sometimes born with light brown coats that darken as they reach maturity. Dogs that have the coco genotype, as well as the bb genotype at the B locus, are generally lighter brown than dogs that have the Bb or BB genotypes at the B locus.