Breeders have managed to mix within the merle gene as well developing the Isabella merle French Bulldog, but these canines are extremely scarce. There's also “new shade” variations of such colors which can be a bit lighter in colour due to owning an extra copy from the dilute colour allele. https://miloxejop.vidublog.com/38594882/lilac-merle-french-bulldog-for-sale-options