getSupportActionBar().setBackgroundDrawable(new ColorDrawable(getResources().getColor(R.color.red)));
getSherlockActivity().getSupportActionBar().setBackgroundDrawable(new ColorDrawable(0xff00ACED));
mActionBar.setBackgroundDrawable(new ColorDrawable(0xff00DDED));
mActionBar.setDisplayShowTitleEnabled(false);
mActionBar.setDisplayShowTitleEnabled(true);
getActionBar()/* or getSupportActionBar() */.setTitle(Html.fromHtml("<font color="red">" + getString(R.string.app_name) + "</font>"));
action bar