Toolbar back arrow show as black color on 4.x devices

I have used Toolbar and used design library.The toolbar navigation icon and back arrow icon display as white on Android 5.0 device.But on Android 4.x devices it display as black color icons.How to diaplay the icons as white color on both Android 5.0 and Android 4.x devices.

MainActivity.java

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

    Toolbar toolbar = (Toolbar)findViewById(R.id.toolbar);


    final Drawable upArrow = getResources().getDrawable(R.drawable.abc_ic_ab_back_mtrl_am_alpha);

    upArrow.setColorFilter(getResources().getColor(android.R.color.white), PorterDuff.Mode.SRC_ATOP);

    toolbar.setNavigationIcon(upArrow);

    setSupportActionBar(toolbar);

    mDrawerLayout = (DrawerLayout)findViewById(R.id.drawer_layout);

    mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout,toolbar, R.string.app_name, R.string.app_name){

        @Override
        public void onDrawerClosed(View drawerView) {
            super.onDrawerClosed(drawerView);
            fab1.setVisibility(View.VISIBLE);
        }

        @Override
        public void onDrawerOpened(View drawerView) {
            super.onDrawerOpened(drawerView);
            fab1.setVisibility(View.GONE);
        }
    };
    mDrawerLayout.setDrawerListener(mDrawerToggle);

    NavigationView navigationView = (NavigationView) findViewById(R.id.navigation_view);
    navigationView.setNavigationItemSelectedListener(this);
}

@Override
protected void onPostCreate(Bundle savedInstanceState) {
    super.onPostCreate(savedInstanceState);
    mDrawerToggle.syncState(); /* if comment this line white color applied,but only arrow displayed,not display nav icon(three line icon)*/
}


@Override
public void onConfigurationChanged(Configuration newConfig) {
    super.onConfigurationChanged(newConfig);
    mDrawerToggle.onConfigurationChanged(newConfig);
}

toolbar.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.Toolbar
    xmlns:android="http://ift.tt/nIICcg"
    xmlns:app="http://ift.tt/GEGVYd"
    android:id="@+id/toolbar"
    android:layout_width="match_parent"
    android:layout_height="?attr/actionBarSize"
    android:background="?attr/colorPrimary"
    android:minHeight="?attr/actionBarSize"
    app:popupTheme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
    app:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
    app:titleTextAppearance="@style/AppTheme.Toolbar.Title"
    app:elevation="@dimen/cardview_default_elevation"
    app:borderWidth="0dp"
    >

values\styles.xml

<style name="AppTheme.Toolbar.Title" parent="TextAppearance.Widget.AppCompat.Toolbar.Title">
        <!-- Set proper title size -->
        <item name="android:textSize">@dimen/abc_text_size_title_material_toolbar</item>
        <!-- Set title color -->
        <item name="android:textColor">@color/toolbar_title</item>
</style>

values-v21\styles.xml

<style name="AppTheme.Toolbar.Title" parent="TextAppearance.Widget.AppCompat.Toolbar.Title">
        <!-- Set proper title size -->
        <item name="android:textSize">@dimen/abc_text_size_title_material_toolbar</item>
        <!-- Set title color -->
        <item name="android:textColor">@color/toolbar_title</item>
</style>