Actually it was a special edition called the 370z yellow edition and i believe 60 (though i have heard of greater numbers) were produced for the UK market.
The 370Z Yellow is a limited edition of the 370Z GT Pack coupe for the UK market, inspired by the European GT4 race car. It includes Ultimate Yellow body, 19-inch RAYS forged alloy wheels, black leather and suede interior upholstery, integrated satellite navigation system, illuminated entry plates, special mats and a Bose audio with 8 speakers and a 6-CD autochanger.
Only 76 UK spec 350z's in yellow were given the GT4 name