[Twixboy]

I guess no PS experts here, so I started browsing and posted some examples I found. Might not be exactly your car, but still fun to look at.

Black:
http://farm9.static.flickr.com/8300/...5236bcb0_b.jpg

Blue: http://ag-spots-2013.o.auroraobjects...13060012_3.jpg
https://speedx07.deviantart.com/art/...aper-363195529

Red: http://www.fastcar.co.uk/cars/modified-bmw-z4/

White on a E46:
http://forum.e46fanatics.com/attachm...2&d=1443636038

Bronze on a darker silver E46:
http://4.bp.blogspot.com/-Z9amqWWujA...w-m3-e46-6.jpg