This is a plugin for Intellij IDEA, it lets you change the background for your editor window to any of a random set of images that the user supplies. The trick to using several images is to edit the location text box to point at a directory instead of a specific image. It will then pick a random image from that directory.
Here is the entry for this plugin in the Intellij IDEA plugin repository.
Works on Mac OSX - but only seems to handle gif files (png and jpg dont show the code on top of the image :( )
- handle png and jpg images on OSX (works on Windows)
- upon changing the image path/url, handle properly the restart (or remove requirement to restart)
Info on making a plugin work with the whole family of IDEA editors: