Wow. From one artist's book! Irrefutable proof!

You can keep posting pics of blue capes and cowls all day just so long as I can keep posting pictures of all black ones!
Curious. Did you actually read my post about artistic license/aesthetic conceits? Well, I'll explain it again: The colour blue was often used in comics to highlight areas we're meant to understand are black (
particularly back in the simple half-toned printing days). Over the years, it seems that this was taken a bit
literally by fans that don't understand artistic shorthand-hence the literal-minded insistence that the cape/cowl should be blue. Again, something that works well in the comics, but not so much as a direct/literal translation to film. At least Snyder got that right