Superman's black suit

Primary colors of Super Heroes suits.

Superman: Blue

Batman: Black

Spider-man: Red

This is how we know it and this is how we like them. What if they were different? I know Batman can't have anything other than Black but the other two could have easily pulled it off with different colors.

Here is the first of the two "Could have been" scenarios? This one is with a Black Superman suit.

Black Suit Superman