I like the suggestion but it's actually my first time making something this "advanced" in GIMP and I would like to keep it as a simple recolor mod for now. I'm not really changing anything about the design besides making parts black or purple.
I could give it a shot but like I said just above, I'd like to make it a recolor mod for now.
Drawing anything with a mouse is terribly awful and I don't have a graphic tablet nor just a pen to edit those textures with and I just figured out a way to not leave jagged or abrupt blendings between textures so I'm just taking it one step at a time for now.
I do like the suggestions you guys have given though and I can obly promise I'll look into them as soon as the full mod is done.