Change Folder Background in Windows 7
As a folder background changer, this one works differently from the others. Commonly, a folder background changer is created as a standalone program, but this one integrates with folder properties. Changing the folder background, therefore, is as easy as right-clicking the folder.
AveFolderBG is the program that makes it possible. Whenever you want to change a folder background, just right-click the folder and select properties. You’ll see a tab called as Folder Background. Click it and you’ll know what to do next.

Adding a picture to folder background is as easy as clicking the Set Image button. You can easily change or remove this picture background by utilizing the Remove Image. In addition to adding an image to folder background, you can also change the text color of the folder and add shadow to the text. You can also click the “Apply to sub folder also” to apply the changes you’ve made to all of the subfolders.
AveFolderBG is a freeware and is compatible with both 32-bit and 64-bit Windows 7. Go here if you want to download the 32-bit version, or go here if you want to download the 64-bit version.