Custom Background for Groups

I know that BuddyDev offers a "Custom Background for User Profiles" plugin. I am positive that a few weeks ago I found a similar plugin on some site, somewhere, that did the same function for BuddyPress groups - but I've searched Google a dozen times - hard - and now I can't locate it again.

Does anyone know where I can find this plugin? And I haven't looked at BuddyDev's version for profiles; would it be hard to mod it so that it worked for groups? I need this function; anyone have any ideas? My thanks in advance --