Uh...liver chestnut, flaxen tail? Any flaxen coming at the roots of the mane? Cool color anyway.
What colour are her parents? She could be a minimal tobiano.
Very difficult to tell from these pictures. Black silver isn't out of the question.
Breed/breeding? Good lighting pictures of the fetlocks? Good lighting pics of the body? LOL
Looks like Gluastra Plume to me.
On a horse so young that's difficult to say. It's far more likely to be baby flaxen than a GP at this age, but it's SO dramatic that it's far more likely to be Silver than a GP, especially when you look at the mane too.
Mom is a Fresian-cross.. no idea about the dad. They were surrendered by their owner to a local rescue and there aren't really any good photo's.. she just struck me as interesting!
This is the only other photo:
I'm still leaning towards black silver. If you can get more pictures at some point that would be great :)
Looks like silver to me.