I would like to change the color of a specific part of the action bar; since I really don't know how to call it I will post an image:

You see the blue line? Well I would like to make it of another color; what should I do? Thanks.
I would like to change the color of a specific part of the action bar; since I really don't know how to call it I will post an image:

You see the blue line? Well I would like to make it of another color; what should I do? Thanks.
 
    
    just do this:
 ActionBar bar = getActionBar();
 bar.setBackgroundDrawable(new ColorDrawable("COLOR"));
I commented useful link to do what you want with action bar
