Android : How To Change TabWidget Default Tab Bottom Line Color

How can I change the bottom line color of the tab which is defaulted to blue at the moment?

Here is Java Class

protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    // Inflate the layout
    setContentView(R.layout.activity_main);
    // Initialise the TabHost
    this.initialiseTabHost(savedInstanceState);

    mTabHost.getTabWidget().setDividerDrawable(null);


    if (savedInstanceState != null) {
        mTabHost.setCurrentTabByTag(savedInstanceState.getString("tab")); 
        mTabHost.getTabWidget().setDividerDrawable(null);   

    }
    // Intialise ViewPager
    this.intialiseViewPager();
}

protected void onSaveInstanceState(Bundle outState) {
    outState.putString("tab", mTabHost.getCurrentTabTag()); // save the tab
                                                            // selected
    super.onSaveInstanceState(outState);
}

/**
 * Initialise ViewPager
 */
private void intialiseViewPager() {

    List<Fragment> fragments = new Vector<Fragment>();
    fragments.add(Fragment.instantiate(this, Tab1Fragment.class.getName()));
    fragments.add(Fragment.instantiate(this, Tab2Fragment.class.getName()));
    fragments.add(Fragment.instantiate(this, Tab3Fragment.class.getName()));
    this.mPagerAdapter = new PagerAdapter(
            super.getSupportFragmentManager(), fragments);

    //
    this.mViewPager = (ViewPager) super.findViewById(R.id.viewpager);
    this.mViewPager.setAdapter(this.mPagerAdapter);
    this.mViewPager.setOnPageChangeListener(this);      

}


private void initialiseTabHost(Bundle args) {
    mTabHost = (TabHost) findViewById(android.R.id.tabhost);        

    mTabHost.setup();

    TabInfo tabInfo = null;
    MainActivity.AddTab(this, this.mTabHost,
            this.mTabHost.newTabSpec("Tab1").setIndicator("Tab 1"),
            (tabInfo = new TabInfo("Tab1", Tab1Fragment.class, args)));
    this.mapTabInfo.put(tabInfo.tag, tabInfo);
    MainActivity.AddTab(this, this.mTabHost,
            this.mTabHost.newTabSpec("Tab2").setIndicator("Tab 2"),
            (tabInfo = new TabInfo("Tab2", Tab2Fragment.class, args)));
    this.mapTabInfo.put(tabInfo.tag, tabInfo);
    MainActivity.AddTab(this, this.mTabHost,
            this.mTabHost.newTabSpec("Tab3").setIndicator("Tab 3"),
            (tabInfo = new TabInfo("Tab3", Tab3Fragment.class, args)));
    this.mapTabInfo.put(tabInfo.tag, tabInfo);
    // Default to first tab
    // this.onTabChanged("Tab1");
    //
    mTabHost.setOnTabChangedListener(this);
}

private static void AddTab(MainActivity activity, TabHost tabHost,
        TabHost.TabSpec tabSpec, TabInfo tabInfo) {
    // Attach a Tab view factory to the spec
    tabSpec.setContent(activity.new TabFactory(activity));
    tabHost.addTab(tabSpec);
}

public void onTabChanged(String tag) {
    // TabInfo newTab = this.mapTabInfo.get(tag);
    int pos = this.mTabHost.getCurrentTab();
    this.mViewPager.setCurrentItem(pos);
}


@Override
public void onPageScrolled(int position, float positionOffset,
        int positionOffsetPixels) {
    // TODO Auto-generated method stub

}

/*
 * (non-Javadoc)
 * 
 * @see
 * android.support.v4.view.ViewPager.OnPageChangeListener#onPageSelected
 * (int)
 */
@Override
public void onPageSelected(int position) {
    // TODO Auto-generated method stub
    this.mTabHost.setCurrentTab(position);
}

/*
 * (non-Javadoc)
 * 
 * @see android.support.v4.view.ViewPager.OnPageChangeListener#
 * onPageScrollStateChanged(int)
 */
@Override
public void onPageScrollStateChanged(int state) {
    // TODO Auto-generated method stub

}

Here is XML

 <?xml version="1.0" encoding="utf-8"?>
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:orientation="vertical"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent">
    <TabHost
        android:id="@android:id/tabhost"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:background="@android:color/transparent"

        >
        <LinearLayout
            android:orientation="vertical"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            >
            <TabWidget
                android:id="@android:id/tabs"
                android:orientation="horizontal"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:layout_weight="0"

                />

            <FrameLayout
                android:id="@android:id/tabcontent"
                android:layout_width="0dp"
                android:layout_height="0dp"
                android:layout_weight="0"/>

            <android.support.v4.view.ViewPager
                android:id="@+id/viewpager"
                android:layout_width="fill_parent"
                android:layout_height="0dp"
                android:layout_weight="1"
                />
        </LinearLayout>
    </TabHost>
</LinearLayout>