Thanks for all of your input chaps. The colour of the CGT looks even more stunning in the blown up image (excuse me whilst I wipe the drool from my chin!). The paint is certainly pearlescent and it is interesting to hear that VW have a similar colour on their Golf - i'll look into that one, thanks.
I have been on the hunt for the perfect deep blue colour for the last couple of months, and most manufacturers appear to do something very similar to one another. One of the best I found was Fiat's New Orleans Blue (metallic, but not pearlescent) but when I visited my local paint supplier, the shade on their 'colour map' was very different for that particular Fiat colour code. Having spoken to a paint expert at Fiat it seems that the difference between the paint on the car and the paint on the colour map is very common. Apparently, the factory paints can differ slightly in batches, which doesn't help when a small touch-up repair is required as a spray can bought at Halfords for instance is unlikely to be exactly the same as that on the car! What Fiat tend to do (and presumeably every other manufacturer does) when matching paint for a repair is to cut out the damaged panel and analyse the paint on that panel in a computer which reads the precise ingredients of the paint in order to produce a precise match. All very scientific!
I guess my only course of action is to choose the colour that I want from the colour map at the paint supplier. The difficulty with this is having to choose from a small square sample (20mm x 20mm) on the page and imagining this across the whole body of my 911. Thankfully this job won't cost the £30K that Porsche charge for their special order paint.
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