title: Text background issue on Toolbar
body: <p>When adding some alpha to my Toolbar background color, I notice there is a background applied to the title's TextView:</p>
  
  <p><a href="https://i.stack.imgur.com/leDGu.jpg" rel="noreferrer"><img src="https://i.stack.imgur.com/leDGu.jpg" alt="Toolbar title background"></a></p>
  
  <p><strong>Here is my layout:</strong></p>
  
  <pre><code>&lt;FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
           xmlns:tools="http://schemas.android.com/tools"
           android:layout_width="match_parent"
           android:layout_height="match_parent"
           xmlns:app="http://schemas.android.com/apk/res-auto"
           android:background="#0099cc"&gt;
  
      &lt;android.support.v7.widget.Toolbar
          android:id="@+id/toolbar"
          android:layout_width="match_parent"
          android:layout_height="?attr/actionBarSize"
          app:theme="@style/FullscreenActionBarStyle"
          app:titleTextAppearance="@style/ActionBarTitle"/&gt;
  
      &lt;ImageView
          android:id="@+id/fullscreen_content"
          android:layout_width="match_parent"
          android:layout_height="match_parent"
          android:src="@drawable/image"/&gt;
  
  &lt;/FrameLayout&gt;
  </code></pre>
  
  <p><strong>And my styles.xml:</strong></p>
  
  <pre><code>&lt;resources&gt;
      &lt;!-- Base application theme. --&gt;
      &lt;style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar"&gt;
          &lt;!-- Customize your theme here. --&gt;
          &lt;item name="colorPrimary"&gt;@color/colorPrimary&lt;/item&gt;
          &lt;item name="colorPrimaryDark"&gt;@color/colorPrimaryDark&lt;/item&gt;
          &lt;item name="colorAccent"&gt;@color/colorAccent&lt;/item&gt;
  
          &lt;item name="android:windowActionBar"&gt;false&lt;/item&gt;
          &lt;item name="windowActionBar"&gt;false&lt;/item&gt;
      &lt;/style&gt;
  
      &lt;style name="FullscreenTheme" parent="AppTheme"&gt;
          &lt;item name="android:windowBackground"&gt;@null&lt;/item&gt;
          &lt;item name="metaButtonBarStyle"&gt;?android:attr/buttonBarStyle&lt;/item&gt;
          &lt;item name="metaButtonBarButtonStyle"&gt;?android:attr/buttonBarButtonStyle&lt;/item&gt;
  
          &lt;item name="android:actionBarStyle"&gt;@style/FullscreenActionBarStyle&lt;/item&gt;
          &lt;item name="android:windowActionBarOverlay"&gt;true&lt;/item&gt;
          &lt;!--For compatibility--&gt;
          &lt;item name="actionBarStyle"&gt;@style/FullscreenActionBarStyle&lt;/item&gt;
          &lt;item name="windowActionBarOverlay"&gt;true&lt;/item&gt;
      &lt;/style&gt;
  
      &lt;style name="FullscreenActionBarStyle" parent="Widget.AppCompat.ActionBar"&gt;
          &lt;item name="background"&gt;@color/black_overlay&lt;/item&gt;
          &lt;item name="android:background"&gt;@color/black_overlay&lt;/item&gt;
      &lt;/style&gt;
  
      &lt;style name="ActionBarTitle" parent="TextAppearance.Widget.AppCompat.Toolbar.Title"&gt;
          &lt;item name="android:textSize"&gt;50sp&lt;/item&gt;
      &lt;/style&gt;
  &lt;/resources&gt;
  </code></pre>
  
  <p>"black_overlay" color value is <code>#66000000</code></p>
  
  <p>I am using AppCompat and Support libraries <code>v24.2.1</code>.</p>
  
  <p>Do you have any idea on how to get rid of this text background?</p>
  
  <p>Cheers.</p>