OK if I nominate a car from the pre-sponsorship era? I've always loved the Team Lotus Lotus 25 - the British Racing Green, the yellow stripe, the yellow wheels, the yellow pinstripe with "Team Lotus". It's a great looking scheme (I know this is a model, but it shows it off well).
http://www.etamiya.com/shop/images/t...odel/20044.jpg
Oh, and the best driver ever drove the thing...