When you open a folder window, you see the icons inside against a white background (unless you’ve chosen a color scheme with a different Window color). Wish you could change this color to something a bit spiffier? You can do better than that. Similar to the Windows 98 desktop, you can apply any image or wallpaper to your folder window background. Not only that, but if you want, you can apply a different background to every folder.
Open the folder window to which you’d like to apply a background and select View, Customize This Folder. In the dialog box that appears, select Choose a Background Picture, then click Next. Select any of the files (mostly wallpapers) in the resulting list; or click Browse, select an image, and click Open. Click Next, click Finish, and check out your new folder window!