Red, red tobiano, red roan, red tobiano roan, bay/brown, bay/brown tobiano, bay/brown roan, bay/brown tobiano roan, black, black tobiano, blue roan, blue roan tobiano. Basic colors. Add in "overo" type genes and more possibilities. Answers can change knowing if a horse is heterozygous or homozygous for something.
In other words a total crap shoot color wise.
Eta - do you even have permission from the stud owner to be posting him?