this is a nice hack which i'll setup and use.
a question:
i already have a background (an extremely small tiled gif i'm using)
1) if i use a transparent image with your hack, will this be as a layer above the theme's background,
2) or is it going to replace my existing theme's background for the usergroup's posts i'll assign it to?
crossing my fingers for the "1". but if its "2" then i guess i'll combine both as one image (photoshop) and use that with your hack. so its no so much of a problem