Repainting body parts

Do it yourself! Touch-up brushes are unusable but Holts (England), Multona (Italy) or Dupli-Color (Germany) sell the same acrylic paint in 400 ml spray cans, and those are excellent. You can find the matching paint in their catalog based on your car's paint reference number. You may have to check more than one of those, their color range is not exactly the same (for instance, I could find the exact match for my Red of the Long Valley only in Dupli-Color and the Anthracite Grey used on the upper frame of the doors only from Multona).