No, that why I said that rule should apply for Tuyet (and I also think the same for Nidhiki). I never mentioned Lariska. Lariska is different, she has an especific and rare color, so painting should be allowed. But blue and green are very common, especially since it could be any of the variation of those colors.
I wouldn’t said no to metallic colors. For example this Helryx entry use metallic blue, but it blends very well without give her a Nuva or Hagah look.
