Design your bike

I came across this site where you can design your own bike. Basics is that the frame is there and all you need to do is to decide the colour of various bits i.e. frame, wheels etc. You can also buy additional stuff like helmet & saddle. 

Check out their website: http://www.myownbike.de/

Or if you're around Dusseldorf, Germany why not visit their shop:

myownbike

Birkenstraße 73

40233 Düsseldorf-Flingern

And here's something I made earlier.

http://www.myownbike.de/