Well, if you have any doubts as to his parentage...you can always dna him.
I'm assuming you visited the Breeder beforehand and were able to see the Dam & Sire...? If so, you should have an idea as to his future adult coloring.
If not, then what you see now in coloring will more than likely be something different later on.
How old is he and how much does he weigh...he's absolutely adorable!