Mary, regardless of whether it is a new door or a re-skinned door, I would advise that, when you see the car, that you check and are completely happy with the colour match. If you have someone with you when viewing, then have them give opinion as well.
I would certainly not be overly concerned about the fact that is has happened, but the last thing you want is to suddenly notice a difference some time later. Also, please make sure that the repair is fully noted on the dealers notes as it will make it easier when dealing with any issues under warranty.
Good luck.
? I will be remembered for nothing but had great fun doing it ?