color variations or a mutt puppy?

as some of you may know, and for those that don’t, about 3 weeks ago a little lab mix puppy was dumped at my feet (metaphorically speaking) where i work. the lab i can see. but he’s fairly tall and leggy. has all his grown up teeth and his testicles have finally dropped (yes. he gets neutered next week). he’s about 35 lbs right now.
always a crap shoot with the mutts of course, but sure makes things easier for re-homing if i can at least have an idea.
he runs like a dalmation. and though a bit long, his ears are the general shape of a dalmation.
otherwise, he’s all black with a bit of white on his chest. so i’m wondering if a lab and dalmation were to mate, is it POSSIBLE to have an all black puppy?
the few mixes i’ve seen of this breeding always have had white on their feet, or tail etc etc…
my camera’s broken so i can’t post pics.
thanks
OOPS! my bad!
“ON” a mutt puppy…..
(not wearing my glasses)