Thanks for opinions all.
CliffWilkins - Shark Blue interesting yes, but which wheel colour? Yellow not for me, but then again, the Lava Orange is a bit loud too. Comments on black noted and I think I may have dismissed black, just thought it looked really good with the Aurum wheel colour.
BrianJ - plan to keep the car for a long time, into retirement. Will be parked on drive so Lava Orange will attract attention, but neighbourhood generally OK, not had any problems with current Guards Red 981 GTS (touch wood). I note comments on Agate Grey and I like it, but my company car is essentially that colour so want something different to that. I know Crayon is a fairly modern colour and may not hold it's popularity but I have seen a GT4 in Crayon and I thought it really suited the car. I think the Aurum wheels suit the black and maybe the Gentian Blue. I'm definately not worried about resale/residuals as planning on keeping it. I'm fixed on my choice of all options apart from colour, so happy with all that 'on that side of things' (for anyone that listens to Jonny Smits's 'Smith and Sniff' podcast).
Scrounger - Lava Orange agreed very loud, really like it, but maybe too much of an attention seeker, which I'm definately not. I'm leaning to Crayon too.
ed987S - love the Guards Red, but my current 981GTS is Guards Red so want something different. Although it has genuinely crossed my mind to get another Guards Red as her indoors wouldn't notice it's a new car! You think I'm joking, no really. All I would have to say is that I had put a new air freshener in the car, genuinely. Agree Crayon might date, but still think it may be top of my list currently. Lava Orange as I say, love it but really loud. Not keen on Python Green, probably because I've seen so many of them on You Tube when the car was launched. All press cars seemed to be Python Green, or maybe it was the same car? Frozen Berry - agreed, what's that about?