Thanks for your input Paul. Checking the door jamb, there is EYTC on the paint code. Car is 2002. This is my colour in first pic. http://www.ebay.co.uk/itm/CITROEN-C5-1-8-PETROL-COLOUR-EYTC-BREAKING-FOR-SPARES-STARTER-MOTOR-/331843584707?hash=item4d436b42c3:g:dFUAAOSwHnFVr5kx Don't want to paint a door as it will never be the same colour as the rest of body. I could cut rust out of this door, weld and repair. However the work and the cost of paint, plus never getting a match, mean it is hardly worthwhile. If you have a valuable car, then a spectrometer can be used to match older and faded paint. That would be beyond my budget here .