>>151167362
it's like that because the US had humorously bad printing presses until way after everybody else, so color printing had a very limited color pallet and the colors available tended to bleed into one another if you didn't use them in specific ways
but because that was what the visuals looked like, even when the US switched to modern printing technologies the characters used the same visual cues because they'd become part of the visual language of comic books; the only difference between your recolor image of an old-style printing and this image of Spidey in new-style is the little bit of crosshatching yours has where this one uses gradient shading, which was impossible with the older printing presses