Well you can paint the rims any color you want in the game. I just chose bronze for the RPF1's. And the stock ones are 4 lug but I think the game just has all the aftermarket wheels be 5 lug lol.
Take a picture and save it.
It will ask you if you want to upload it to your storefront/www.Forzamotorsport.net
Go to the site and log in with your Xbox Live account and click my Forza, (its not instantly uploaded, give it a couple of minutes)
Ta dah, there are your photos
I'm having issues with my "windows live" id.... So no uploading for me yet. My 360 user name is Paulsfinesthour. Add me if you wanna have some Mazda2 races, I also have pics of my B Spec car I made, it rocks.