If I needed to change the color of my car and it was daily driven, I would look into the sprayable wrap Auto Flex Gloss. No affiliation
"...four or so coats of a black undercoating, four coats of the “paint” with a flex agent, and two coats of a clearcoat.
https://f87.bimmerpost.com/forums/sh....php?t=1530010
They mix any color, but would probably be tough to get the iridescent effect in this product, not sure.