title: How to change Toolbar home icon color
body: <p>I am using a android.support.v7.widget.Toolbar and learned from <a href="https://stackoverflow.com/a/27152138/335640">this post</a> how to change the color of the hamburger icon to white, but the up/back arrow remains a dark color when I call</p>
  
  <pre><code>setDisplayHomeAsUpEnabled(true);
  </code></pre>
  
  <p>How can I make the arrow white as well?</p>
  
  <p>Here is what my toolbar looks like when I call setDisplayHomeAsUpEnabled():</p>
  
  <p><img src="https://i.stack.imgur.com/UvSv8.png" alt="enter image description here"></p>
  
  <p>...and here is the relevant portion of my styles.xml file:</p>
  
  <pre><code>&lt;style name="AppTheme" parent="Theme.AppCompat.NoActionBar"&gt;
      &lt;item name="colorPrimary"&gt;@color/primary&lt;/item&gt;
      &lt;item name="colorPrimaryDark"&gt;#194C5F&lt;/item&gt;
      &lt;item name="colorAccent"&gt;@color/accent&lt;/item&gt;
      &lt;item name="drawerArrowStyle"&gt;@style/WhiteDrawerIconStyle&lt;/item&gt;
  &lt;/style&gt;
  
      &lt;style name="WhiteDrawerIconStyle" parent="Widget.AppCompat.DrawerArrowToggle"&gt;
          &lt;item name="spinBars"&gt;true&lt;/item&gt;
          &lt;item name="color"&gt;@android:color/white&lt;/item&gt;
      &lt;/style&gt;
  </code></pre>