What is with this dude's obsession with Elizabeth Pink? He's not only fine with poisoning his workers but his customers, and the only reason he wanted more power was so he could spread the color even further? It'd be a hell of a twist if it was revealed that it was like in Color Out Of Space or Elden Ring or something where the color is a conduit to an outer god and that's where his otherwise inexplicable, insane obsession comes from.
If the third volume (if there's a third volume) turns into a cosmic horror that'd be pretty intriguing.