What dates relevant to a vehicle supply effect future value?

[PepeLePew]

Hi, Im in the middle of a purchasing experience at the moment and am curious of what effect the big three dates have on future resale of the vehicle:
Build Date
Compliance Date
First Registration

Story...I order a vehicle but colour was still up in the air. They indicated they had two colours,,,I said Id prefer black. The two alternate colours I specifically asked their build and compliance and they're 2010 for both.

Anyway, time comes they say they have sourced a black from another dealer. Past tense, done. I asked build and compliance and the BUILD is 2009. I suggest that would affect my future resale as I'd have to advertise as 2009 and a dealer would mark me down on it.

I get, along with a significant level of abusive comment, the fact that "the Dec 09 build has no affect on the appraisal of your vehicle the important date is the compliance date and the first year of registration"

My question for those in the industry and/or with practical experience, is this really true? If I trade, would they knock me down on the build date? If I sell privately, I'd have to advertise as a 2009 vehicle also correct/no?

Thanks for any help, I have zero joy left in this purchasing experience.