just came across something that made me think of this thread- It appears people are also Cerakoting their calipers. Cerakote is known a lot in the gun world for high-heat, durable coatings. If you click this link, some of the gold cerakote options look pretty dang good, albeit not exactly the same. Just another option for people...
https://www.cerakote.com/project-gal...-140-and-h-167