Had these done because soon have to change rear`s, think that it is worth to renew them all, allso pads.
Didnt cost anything, my previous workplace sends allmost every week stuff to coating company and these went among the other stuff.
That is called some "yellow passivating" here, its thin very shiny zinc and then the colour.
Wasnt sure how these take the colour but the result is good and they wont rust so easy.
Sorry about the phone pics...
