Android_Custom_ToolBar.java

//import android.support.v7.widget.Toolbar;

public void all_about_toolbar(){
	/**
	* create Toolbar and set Title, subTitle, textColor
	*/
	Toolbar toolbar = (Toolbar)findViewById(R.id.toolbar_id);
	toolbar.setTitle("app_title");
	setSupportActionBar(toolbar);
	toolbar.setTitleTextColor(Color.COLOR_NAME);
	/**
	* set up button
	*/
	getSupportActionBar().setDisplayHomeAsUpEnabled(true);
}

// toolbar, toolbar_id, app_title, COLOR_NAME

styles.xml

<!-- Base application theme. -->
<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
	<!-- Customize your theme here. -->
	<item name="colorPrimary">@color/colorPrimary</item>
	<item name="colorPrimaryDark">@color/colorPrimaryDark</item>
	<item name="colorAccent">@color/colorAccent</item>
</style>

<style name="AppTheme.Toolbar" parent="AppTheme">
	<!--This line changes the color of text in Toolbar-->
	<item name="android:textColorPrimary">@color/white</item>
	<!--This line changes the color of icons in toolbar (back, overflow menu icons)-->
	<item name="android:textColorSecondary">@color/white</item>
</style>

toolbar.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.Toolbar 
	xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/toolbar_id"
    android:background="@color/colorPrimary"
    android:minHeight="?attr/actionBarSize"
    app:theme="@style/AppTheme.Toolbar">
</android.support.v7.widget.Toolbar>

<!-- toolbar_id, colorPrimary -->