So I've been doing some research on how comics used to be colored and also looked at many comics on this site for reference.
One the people who posts here occasionally, The Ghost Man, has a website, The Vintage Inkwell Academy
https://vintageinkwell.com that you might want to check out, if you haven't found it already.
I plan to work more on the pages and include variations on the paper texture and also shift the CMY layers so they're not perfectly aligned, as it should be.
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I can understand this when someone is making a prop for a movie or TV show, but intentionally creating a printing mistake is... odd.
Years ago the gal who made the webcomic I Was Kidnapped By Lesbian Space Pirates made the artistic choice to make her webcomic look like an old printed comic with off-register color plates. Ummm... yeah... It baffled me that she chose to make her art look worse.
More recently Ya Boi Zac of the YouTube channel Comics Matter was talking about printing of his comic Iron Sights, which he wanted to look like an old Mexican comic you might find in the bathroom and yet the printers made it look really good and he had to try and get them to make it look worse.
I imagine the printers were probably rather confused because from their POV they want the products they print look as good as possible and asking them to make it look terrible would just be strange.
Make sure the printers know what you're going for or you might find yourself with a stack of good-looking, pristine comic books.
Best of luck!