HGG Community Forums

Tobiano markings: Tobiano is a white gene and so it's expression is dependent on the horses WF, or white factor. The one with more tobiano marking has a large WF, while the other has a light WF.

Roaning or Dapples: Honestly, this is just a variation of expression. Sometimes roan can be almost hidden, as it is on the top horse. Silver can give dapples, but only sometimes. So one foal got the dapple expression, and the other got the roan expression. If you want to change this you can always reroll the photo under IV shopping for 100hbs.

There is actually quite a variance with silver, especially in blacks. You can get dapples, or a flat coat. It also lightens up blacks to varying degrees and, if you look at the muzzle of the bottom one, you can see that it is kind of brown, which is also applicable to silver blacks. It's a lovely pattern to be breeding for though, silver black roan. There is a buddy chat room dedicated to the colour if you want to breed for it.

Also from what I understand the tabiano gene in real horses causes a chemical wash during the foals development and that is what would create the pattern itself so it would be random.