Where there's a will, there's usually a way. Sidekick 3
owners miffed about being trapped inside Danger's walled garden of content will be happy to know that some resourceful peeps have managed to drop custom backgrounds and themes on their units -- and it appears to be a pretty simple process, to boot. Modify a text file, drop a few images via USB, and you're good to go. At least until Danger decides to patch to get you non-conformists back in line, that is.
[Thanks to everyone who sent this in]