Virtually all F1 crosses with golden retrievers are black. That's because golden retrievers have a genetic variant that prevents black pigment from the coat, but the dogs themselves are genetically dominant black like Labradors. read more
Smooth coats are dominant in dogs, so a cross between a pit bull and golden retriever will mostly be black and smooth-coated dogs. My guess is most of your golden-pit bulls will look something like her. read more