Change the color of the on-screen button bar

Question

I am trying to change the color of the button bar on the screen:

I managed to change the color of the status bar through Android Manifest as follows:

android:theme="@style/Theme.WebViewApp.Gray"

However, I cannot figure out how to change this purple color.

Answer 1

This section of the screen is called the NavigationBar:

You can change the color of the NavigationBar using: http://developer.android.com/reference/android/view/Window.html#setNavigationBarColor(int)

This method will not work in API version <21.