Definitely chestnut/sorrel (depends which term you use, both are genetically the same).
This horse is chestnut, but for all the world looks like a palomino:
It's a Haflinger, though, so can't be palomino as the cream gene does not exist in the breed. Pali being chestnut + cream. Haflingers HAVE to be chestnut, there is no such thing as a black or bay haffie and like I said no cream in the breed, meaning no palomino.