Android Button Selector Color

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_pressed="true"
          android:color="#4CAF50"/> 
    <item android:state_focused="true"
          android:color="#9C27B0"/> 
    <item android:color="#F44336"/> 
</selector> 

android:textColor="@xml/color_selector"
 

package com.concretepage;
import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
public class MainActivity extends Activity {
    private final static String TAG = "MainActivity"; 
    @Override
    protected void onCreate(Bundle savedInstanceState) {
	   super.onCreate(savedInstanceState);
	   setContentView(R.layout.activity_main);
    }
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
           getMenuInflater().inflate(R.menu.menu_main, menu);
           return true;
    }
} 

<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:tools="http://schemas.android.com/tools"
        xmlns:ads="http://schemas.android.com/apk/res-auto" 
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:fillViewport="true">  	  
		<LinearLayout
		    android:id="@+id/myLayout"
		    android:orientation="vertical"
		    android:layout_width="match_parent"
		    android:layout_height="wrap_content"
		    android:background="#FFFFFF"
		    android:fillViewport="true">
		    <Button
		        android:id="@+id/button"
		        android:layout_width="fill_parent"
		        android:layout_height="wrap_content"
		        android:text="@string/btn"
		        android:textColor="@xml/color_selector"/>
		</LinearLayout>
</ScrollView> 

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.concretepage"
    android:versionCode="1"
    android:versionName="1.0" >
    <uses-sdk android:minSdkVersion="14"/>
    <application 
        android:allowBackup ="false"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name" >
        <activity  android:name="com.concretepage.MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>
</manifest>