IMHO lighter colours show off the shape better by virtue of contrasting bodywork with vents, intakes wheelarches and glasshouse etc. Darker colours (Blacks, Green and Blue) hide it all away + are pain to keep looking good. They just don't show the shape off as well as the other options. Fire and Sapphire Black sound good in principle but are out because they're a) dark and b) you need to be up close, in constant sunshine and wobble your head to get the effect otherwise they just look flat.
The two leftfield choices are Azure Blue and Ice Silver, both need balls and a degree of independence (should that be Gallic flair
) but I think they're both strong options.
Which just leaves a choice between safe (greys/silver), bling/fashion (whites) or statement/occasion/heritage (VY, VR or MO). I'm writing VO out as I think it seems to have morphed into a wierd browny/bronze which doesn't quite know what it is. I haven't seen any photos of Mercury Red so can't comment, but from the photos on here I'd be willing to bet VR just pops more. Whites may or may not fall out of favour and hamper things when it comes to resale. Greys/Silvers are the safe neutral colours of which you should go either Graphite or Supernova.
All of which entirely logical and completely unbiased process leaves you with either VR or MO. As Falb says, you don't want Orange (need shades to look at it, attract too much attention from other road users, bugs and rozzers, gives you cheek-ache from grinning too much) so therefore Volcano Red is the best colour.
(Unless you pay the nice MSO man £12k and get yours customised in Panther Pink)