In 1998 when I sprayed my 86 Dulux where still in auto paints, a local guy used the original Dupont codes and the result was as close as any Rover paint job.
My favoured reference point for original colour is under the Left hand handbrake hole cover, these covers have rarely ever been removed and the rubber seal up against the inner surface gives a pretty original colour.
The plastic shine issue is why I like to use acrylic lacquer, this is becoming harder to get.
Due to the need to buff out its shine the result is much deeper and you can stop at the required gloss level. It has in my opinion other advantages, can be sprayed in less than perfect surroundings, pretty easy to spray, very easy to repair and only just a bit toxic. Big disadvantages are the work needed to buff and not as hard as 2 packs.
Dennis

