ImageView and color

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical">
// www  .  j  a  va 2 s .c om
    <ImageView
        android:id="@+id/image2"
        android:layout_width="125dip"
        android:layout_height="25dip"
        android:src="#555555" />
</LinearLayout>

package com.java2s.myapplication3.app;
//from www . j a v a  2  s .  com
import android.app.Activity;
import android.os.Bundle;

public class MainActivity extends Activity {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

    }

}