Can we get a modding tutorial, I would really like to change colors for one or two suits and I want to do a hair swap

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I want to change the red in robins tribute asylum to green, make the yellow on his iconic delta green, make the red green, and make the green black, give his year one, knighthood, and eternal suits nightwings year one hair and change it to brown, and change the purple glow of the bioelectric to yellow. Can someone tell/show me what I need to know to do that?