I love this idea for web design! It would be a cool trend to see more web sites designed by hand in the real world instead of existing entirely digitally. It's like special effects. The movies that use models and practical effects always look cooler, feel more real and have way more longevity.
To that end, I went and got some black duvetyne, photographed it with nice, even light and then replaced the background of my site with it. Can you tell the difference?