I know she has roaning, but thought that's from the Appy in her.
When I bought her, she was a yearling, and her tail was completely black(with some sun-bleaching), as well as her mane, and now it is half silver! Her mane and tail have just changed colour this year. Could this have something to do with a roan, or just the appaloosa, or something different?
Here she is as a yearling:
And here she is this last year, still black:
And here she is this year:
Thanks for your help!