If you have some money, you can pick up a really nice WordPress ready theme that would be great for fall from Digery Studios.
Between client projects, I was able to complete this theme. After some perfecting, it will be available for purchase. I love browns and fall is upon us here, so I felt this theme coming. The wallpaper is from a photo I took one afternoon while driving around in the country. There are red accents with the links and headers to break up the dryness of the brown.
The weeds theme looks great, but to have it for your blog, you will be looking at shelling out $50.
thanks again to ch0de for the great links lately.