Just put some 17" Alloys on my 98 A3. Look a lot better, but now they have exposed the dull calipers and discs with rust spots on them. Have decided to paint the calipers and sand the discs. My car is Ming blue wanted a colour to match, think red is a bit flashy for an A3. Can anyone advise on paints to use, I've heard hammerite is good. Any advice on the best way to do this, how long it will take, how diffiuclt it is, good tools to use etc. Thanks!