Grimdark matte backgrounds

I’m looking for a set of matte backgrounds for photographing miniature war-games; specifically Warhammer 40k, but also Epic Armageddon and other generic scifi/generic settings would also be interesting. I really like the look of of the model photos in Games Workshops codexes and Visions where the model porn is shown up close and details but you can see some fuzzy backgrounds that tie in with the setting.

As seen in this photo:

That background is clearly a painting/print sitting at the edge of the board but it gives a really nice environmental feel. Surely someone has already created a set of generic backgrounds for model builders (non-wargaming) but I haven’t been able to find anything other than random textures.

Has anyone seen backgrounds from the right angle like this available? 

I need to get a smaller photo booth I think… or taller cabinets perhaps. I just got a new Eye-Fi card for my camera so that I can snap shots down stairs and the “magically” appear on the ‘puter upstairs. So far so good though the range isn’t as great as I had hoped.

Still, all in all it works.