Navbar Apps

Navbar Apps is an interesting app that lets you completely customize your Android's navigation bar. Aside from changing the way it looks, it also lets you add extra functions to the three traditional buttons. Its main allure is in the fact that your device doesn't need to be rooted for it to work.

The app lets you choose a set background color or specify one for opening certain apps, so it changes to another color. You can also set it to automatically change to the same color as the upper task bar. If you want to give it an even more original look, you can add an image from your device or choose one from the app's integrated gallery that includes anywhere from Nyan Cat to camouflage textures and more.

You can also add extra functions, like a bar that shows your battery level.