Justineau Casting = Deal Breaker

I read the book and listened to the audiobook and it's very clear that Ms. Justineau is black--a pretty black woman in her 40's and Melanie is a pale blond kid with blue eyes.

I'm not at all happy with the re-casting in this case. Sometimes, I don't mind, if it doesn't affect the dynamics of the story. But in this case, what's the aversion to having this attractive black woman as the main character (and let's face it, if she's black and in her 40's, then an actress in her 30's could play her, and there are plenty of good looking black actresses in that category needing work!) who has a little zombie girl and a soldier (Gallagher--who they made black here. Why??) crushing on her? They changed all the dynamics so it looks like two black people pining over a white chick. Unacceptable. What year is this?

FYI, I also didn't agree with casting Michael B. Jordan as Johnny Storm. Maybe it wouldn't have been so glaring if he didn't have a sister, but...

Let me repeat, I generally don't have a problem with creative casting, but NOT when it interferes with the intent and dynamics of the story. Melanie says more than once that she's attracted to everything about Ms. Justineau...her skin, her hair...Ms. Justineau is black!

Is the author (Mike Carey) so eager to get a film adaptation that he's afraid to push back on this? Too bad, because he'll be losing a lot of $$ at the box office since I already know 18 people who won't be patronizing.