err guys.. better be carefull before applying any custom vinyl.. : 

What not to do:

Don't distribute, post, publish, upload, disseminate or discuss defamatory, infringing, obscene, sexual or other unlawful materials like child pornography or illegal drugs including images, audio, video, or text.

If you violate the Code of Conduct or the Terms of Use that you agreed to, action may be taken against your account. Some offenses warrant an immediate account cancellation, including but not limited to hacking, modding, severe racial remarks, continued creation of profane gamertags, and posting viruses or URLs to viruses

source: http://forums.forzamotorsport.net/forums/thread/169421.aspx