What color will my horse shed out to be?

She was born a dun with a dorsal and zebra strips, but no black markings. Her head already is growing fresh hair that is a little darker than a buckskin. She is almost two months old and her sire is black and dam buckskin/gray. She also has black hair on her forehead in a star pattern, and her dorsal stripe is still there. I was thinking grulla, but I think she is a little light for that. Any suggestions would be great!!!