I use this effect in my Android live wallpaper app, Rainpaper. It supports weather synchronization, reddit integration, custom backgrounds (including video), and muzei extensions.
Nice, I wondered if someone had done this. One request I have for the app would be the ability to select a local folder and have the app cycle though all the pictures in it. Being able to change the picture more often (like every 10 minutes) would be great too.
You can see the app at https://rainpaper.com