I'm not really into fuel doors but I did buy my roof rack from some folks here in California. They are die hard Hummer Folk that say the original maker of AM GENERAL racks created the one that I purchased for my H2, anyway they have a black fuel door that some of you may like so check it out and let me know what you think. I am sincerely curious not because I want a fuel door but because I haven't heard anyone else mention this site. They did a great job for me.
http://4x4hummer.com/