At the MINIUSA site you can design your own roof and publish it on their site.
Great idea?
Yes, until you try to do it!
First you have to register...not just email but a two page form!
Then you can't use regular jpegs, you need to do gif conversions of your graphic.
If you're willing to put up with all the aggravation, here's what you end up with:
If you have a lot of time and don't get frustrated easily, here is the link
Click here to build yours
Now if you could do it for real on your own MINI, now that would be cool!