Colour as the others have pointed out is reasonably rare being a 2007 only colour, so not that many of them. Rare is good, as is unique. Go for it, if it all checks out.
In most other countries the colour is called Solar Orange. http://my350z.com/forum/350z-colors/245 ... range.html
As the others have pointed out Nissan weren't too flash with paint on our cars, so not it shouldn't be a worry if the panels are about 1 shade out between the metal and plastic panels. The side skirts, A Pillar cover, gas flap, nose, tail are all plastic whereas the bonnet, tail gate, front/rear quarter, doors are metal.
Anyway, if you're having an AA check done, surely that should pick up any possible accident damage.