Haha Dodge Vipers are awesome! Well the older body style ones, not the crappy square ones they make today. The new SRT GTS Viper looks pretty awesome though! Okay anyways... I personally have always liked black. Glossy or Metallic. I think it looks really awesome but, like Edgethis said, it is a little too common.

Honestly, yellow might not be that bad. Or sometimes a Copper/metallic or amber color can look pretty cool. I've never seen that on a Bronco, but it may look good.

To play it 'safe', I would go black for the best looking color, then metallic dark green!