Eh regarding skin color people don’t care about realism these days. You have historical remakes with totally anachronistic ethnicities in them and “no one” cares.

I mean sure, some people do, the same as some people used to complain about overrepresentation of caucasians in some old movies set in what was then called “the orient”. I think the only ones who put up a fight are the Japanese who don’t like their productions ethnically misrepresented as much.

B&W highlights the stories better. With color you get more ambient context and sometimes that’s interesting.