@ Samozin: Where are my new ideas? You're looking at it. It's our first grunge type theme, it's the first time we've used those colors, ... You can do better? I doubt that cause i'm really happy with our result.
@ inflame: There are dozens of great looking grunge type themes available on the web and they all combine the same essential elements to build a typical grunge layout (ie dirty textures and background images, dirty stains, flipped images, handwritten elements, etc...). These type of themes are very popular (especially for wordpress) these days and cause we very much like that style ourselves, we though it would be a good idea to build a theme like that for the SMF community. So to answer your question, no it's not inspired on any other grunge type theme but yes you'll probably see the same elements return in other grunge style themes.