My dappled thoroughbred has a kind of chestnut colouring around her her back legs like ether side of where her tail sits she has chestnut flakes through it. She's going on 8 later this year but I was just wondering is this normal? Or what? It's not dirt because she is stabled at night and is rugged from head to toe. It's faded the tiniest bit since over had her but it's still there.