It is easy to set a default color of the items background in action bar by setting:
- @drawable/action_bar
Have you tried the solution from user3225831 mentioned here: https://stackoverflow.com/a/21297231/1738838
ActionBar bar = getActionBar();
bar.setBackgroundDrawable(new ColorDrawable("COLOR"));
Use simple one line code... Pass RGB values of the required color
getActionBar().setBackgroundDrawable(new ColorDrawable(Color.rgb(248, 248, 248)));
For Color codes, you can use this website: http://www.rapidtables.com/web/color/RGB_Color.htm
I have found a simple workaround of this problem. You can set transparent color to the background of action bar item. Then changing color of the action bar will change background of the item. I don't see possibility to change item color without recreating an the activity.