Paint brake calipers

Hello! Has anyone ever painted the brake calipers? Have seen the brake caliper varnish from Folia Tec. It is applied with a brush. You don’t have to remove the saddle, do you? What about the paint, with Folia-Tec stands “2-component lacquer”. So it has to be mixed. But I can do a maximum of 2 saddles at the same time (can only find 2 jacks). Is the mixed paint then dried for the other saddles? Or can I also only make half of the paint Mix in, and then the other half later? Is there anything else you have to consider? Thanks for the help! Bye!