动态改变titleBar标题颜色

@Override protected void onCreate(Bundle savedInstanceState) {     super.onCreate(savedInstanceState);     final boolean customTitleSupported = requestWindowFeature(Window.FEATURE_CUSTOM_TITLE);     setContentView(R.layout.main);     if ( customTitleSupported ) {         getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE, R.layout.mytitle);     }     final TextView myTitleText = (TextView) findViewById(R.id.myTitle);     if ( myTitleText != null ) {         myTitleText.setText("========= NEW TITLE ==========");         myTitleText.setBackgroundColor(Color.GREEN);     } }