Comics can be black and white - I grew up reading one called The Phantom decades ago printed in b&w, and more recently I read The Walking Dead comics that are b&w too.

Also, most manga is 90+% percent black and white, with many series having at most maybe one or two colored splash pages per issue, or the occasional promotional or plot climax issue that's all color.

Plenty of the popular comics in Italy are published in b&w too, color was only used for premium/special editions.

I bet iPad Pro + Comixology =

That is definitely sick combination. And very pricy. :)

I use an older iPad and it does great for comics, but there are lots of monochromatic comics out there, just not necessarily the popular cape stuff.