How to customize the back button on ActionBar

Question

I have been able to customize the action bar\'s background, logo image and text color using suggestions from these:
Android: How to change the ActionBar "Home"

Answer 1

The "up" affordance indicator is provided by a drawable specified in the homeAsUpIndicator attribute of the theme. To override it with your own custom version it would be something like this:

If you are supporting pre-3.0 with your application be sure you put this version of the custom theme in values-v11 or similar.