I refinished mine with VHT heat cured paint. I used the white paint for the stencil.
You cannot take the Brembos apart to powder coat them, they will leak when you put them back together. Centric mills the mating surfaces flat to ensure leak free performance after they are powder coated, and even at that Brembo says they do not recommend the Brembo calipers be refurbished by ANYONE, including themselves. Take it for what its worth.
I have a bead blast cabinet so I blocked off the ports and lightly blasted the calipers, then painted them with VHT paint and cured them in my Cerakote Oven for 2 hours. They looked perfect when I took them off when I traded in my 12 for a new 15. Had about 7500 miles on them.