One of the guys on the
www.subsim.com forum that does a lot of mod work for the SHIV game did research into the paint schemes for fleet boats during the war. It turns out that for most of the war, a lot of boats were painted black (MS/9 paint scheme) and the fleet really didn't start using the black/gray late war patrol scheme (MS/32) until '44... even with the updated superstructures. Just more of a historical trivia note than anything. I like the late war scheme, personally.
Now, from the photos that I've seen of Batfish, she seems to have always had the two-tone paint job. I don't remember ever seeing any all-black Batfish photos.
Also, speaking of superstructure, it looks like she had her 40mm gun on the forward cigarette deck, instead of aft and vice versa for the 20mm - the 20mm didn't have any deflector plates, either. I don't expect us to move the guns, though. The original forward deck looked like it was bigger than our version/replica and it would be a lot of work to move them.