Livonne, a Trakehner mare. Her sire is an ordinary dark bay, didn't find any pic of her dam Lizzy but there's no gray in her dam's pedigree. So Livonne is not gray and if it was, it would be the most peculiar-looking one! Same goes with roan. Livonne doesn't look like a sabino, either. Rabicano? Tail is partly white all right, but usually rabicano doesn't add so much white hairs to the shoulders and mane. Some Appaloosa pattern? With a Trakehner?