In your fragment you can do
getActivity().getActionBar().setTitle("My Title");
I guess you are talking about <
.
http://developer.android.com/training/implementing-navigation/ancestral.html
getActivity().getActionBar().setDisplayHomeAsUpEnabled(true);
To change icon
getActivity().getActionBar().setIcon(R.drawable.myappicon);
I don't know what you mean by changing the header color.
Check this for Custom Styling the action bar
https://developer.android.com/training/basics/actionbar/styling.html
Also check this
Remove application icon and title from Honeycomb action bar
getActivity().getActionBar.setIcon(android.R.color.transparent);