Dye for a hard vinyl doll?

I've got a Gene doll who's yellowed unevenly and basically gone to squat color wise. I'd like to dye her something non human, so the unevenness won't matter.
Any recommendations?
Any recommendations?
Where no dollieh is left behind.
https://ww.dolliehsanctuary.com/sanctuary/
https://ww.dolliehsanctuary.com/sanctuary/viewtopic.php?f=13&t=12371