After many hours of searching I have finally found a photo of a zed (2+2) in factory 362 Dark Purple Metallic
It's in the background of the film "Who's that girl" shot in 1987. That would make this car around 10 years old and considering that the 362 had terrible fading issues etc. this would make sense that it looks like this in 1987 and that it wouldn't have been resprayed. I've tried a few different paint places and they have all been unable to come up with any information on the 362 Purple so I think I will buy this touch up bottle and see how close it is to below, take it to a paint shop and get it recreated.