Is it possible to have purebred palominos?

No, it is not possible to have purebred palominos. The palomino colour is not a breed but rather a characteristic of horse colouring. Palominos are solid horses of a golden colour with a white mane and tail. They are typically a cross between a chestnut and a cream-coloured horse. To be considered a palomino, a horse must have a chestnut base coat and a flaxen mane and tail. The mane and tail must also be the same shade as the body colour.