Perhaps don't do what I saw a bloke had done at VW Whitenoise last year- Took a jazz blue colour concept and wrapped it in purple D'oh!
Each to their own when it comes to your own car. Just make sure you like it. I have always liked colour concept especially in the polo. I say get the stance right and the rest will talk for itself.
Here is some inspiration from another car shared here. http://www.clubgti.com/showthread.php?229438-Golf-Mk3-Colour-Concept