Old thread but I don't really know where to post this...
... and since we're speaking of backgrounds, I changed the background image in the application manager by replacing /usr/share/themes/default/backgrounds/applicationmanager.png which worked like a charm. However, there is a two second period when HAM is launched (while the spinning icon on top shows) when the default background with the three default icons are shown, and I can't figure out where that background image is stored. Any ideas...?