Forget dealers, 100 odd quid! haha noooooooo....
Can of plastic primer £5 Can of your colour £5 can or clear lacquer £5.
news paper on floor, few good coats of each and leave to dry.
bang em on the car,,,
job done
and for chelsea, its a bit of a pain, but behind the mirror glass there are 4 clips, with a flat screw driver and a bit of bravery you can pop up the clips and pull the cap away, i say be brave as you do have to push the mirror glass about abit to get to them.

Mine used to be standard with no paint on