You wouldn't be painting the threads and those bolts that would normally be removed unless you had to rebuild your calipers. Change your fluid once a year and you won't have to do that. Those bolts are not removed when changing the pads.I did not paint the hardware for fear of making them more difficult to remove. A paint pen would have been great, but I had to use high tep ceramic paint... If they make that in a pen form I missed it. Would have saved me 30min. I willl keep an eye out for nickle hardware.