Superman’s black suit made a cameo in a Justice League (deleted) scene, but was he supposed to wear it at one point? According to costume designer, Michael Wilkinson, yes.
The black suit is something that has fascinated us as filmmakers from the get-go. We saw a glimpse of it in the nightmare sequence from Man of Steel when Superman was wading through skulls, and also in the deleted scene from Justice League where you do see Clark walking through the spaceship and it’s teased in the background.
When we were prepping Justice League, at first it seemed that it might be a logical choice for the look of Superman when he’s resurrected. Zack is extremely respectful and passionate about the depiction of Superman in comic books and graphic novels, and traditionally when he is resurrected, he is in the black suit.