Welcome to the community Mike! Sounds like you have quite the denim collection. I'm in the DC area too! Have you ever checked out Denim Bar? I think there's one in Pentagon City, I've never had the chance to stop and check it out though.
Lorna posted Diesel Black Gold's Fall 2013 collection. The theme behind the collection was "the need for speed, the open road and the ambiance of a classic gas station." You can check out more images from the show in Lorna's post here.
Looks like they're still selling them on the US site, so I'd imagine you'd be able to find them in stores. if not here they are on the US site: http://us.levi.com/search/index.jsp?kwCatId=&kw=520&origkw=520&sr=1