Paint brake calipers

Servus, I want to paint my brake calipers when I make my brakes and rims. Only I find only varnishes to spray. But I think it’s much easier to brush. I don’t really want to remove the whole saddle, it’s unnecessary extra work. What experiences have you made with painting the brake calipers, and especially how did you do it? If I can give you a hint where I get one to brush from, I would be very connected to that one.