Themer, the popular new app/launcher, has a waitlist approaching several hundred thousand people. The promise is simple: theme your device easily, making it appear fresh on a whim. Accomplished via a link to their MyColorScreen site, which houses various themes for you to use (as well as a tool to build your own!), Themer wants to make the fussy task of theming a device as simple as looking through a picture gallery. No wonder the wait list is so long.