Matt
I do have some more info but no time tonight to dig it out, as you can probably see it all gets very confusing and colours changed within series so not as straight forward as might be expected. Not all markets took all colours and different models were offered in differing selections for instance in the UK it seems that the coupe ie was only sold in red or black but the volumex coupe was sold in red, black,silver,met grey or white but neither representing the full colour range produced.
Early spiders up to series two had some unique colours I'll list these later. Anyway I think you've taken on quite a task.