I bet that is the original colour and rest of the car has faded. My brothers astra looked like that, when he had the back end sprayed.
You sure on that?
If the rest of the body had faded, surly that would be lighter and not the door?
Looks like a wrong colour match to me imho, silver and red are the worst 2 colours to match anyway.. I'd take it back and tell them your not happy.
Obviously the QC tester wasn't doing his job properly before they released that.
Also they must have replaced the mirror cover as thats the same colour, get them to respray that too