Depends a lot on the rest of the paint, if it is in good order it might come close otherwise they would need to blend it into the adjoining panels. Maybe take the car to a decent panel shop and ask their opinion, be a lot easier if they can see what they are working with. Dupli-color etc is ok for touch ups and small areas but doing a whole door you might get lucky and it will match close enough and if the adjoining panels are ok you might be able to polish them to match the new looking paint better. If you don't have any painting experience and want a good job talk to a pro and if you will be happy with close enough if you don't get it 100% give it a crack at home and see how you go.