chestnut

What color would you say my filly Belle is? She was registered as a sorrel, because that's what color she was when she was younger. But her reddish brown mane turned flaxen when she was 2 years old. Now it has turned white as a 3 year old. Is she a palomino? I don't feel that her body is a light...

My weanling Luna was born a sorrel, but is now getting more and white hairs in her coat. Does this mean that she could be changing color? I know that some people say its like opening a present the next spring because they change color so much. If she is changing color, what color could she...