title: Setting header color of app in overview (recent apps) screen
body: <p>I'm adding some Lollipop-only styling to an app.</p>
  
  <p>I want to change color of header in overview screeen like Gmail here:<br>
  <img src="https://i.stack.imgur.com/7OsvE.png" alt="enter image description here"></p>
  
  <p>I have figured out I can do</p>
  
  <pre><code>&lt;style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar"&gt;
  
      &lt;item name="android:colorPrimary"&gt;@color/my_favorite_color&lt;/item&gt;
  
  &lt;/style&gt;
  </code></pre>
  
  <p>to achieve it, but I would want to specify only the color for this case, just like I can do:</p>
  
  <pre><code>&lt;item name="android:statusBarColor"&gt;@color/my_favorite_color&lt;item&gt;
  </code></pre>
  
  <p>Is there a specific attribute to set header's color?</p>
  
  <p>Side question: can icon and title be also changed?</p>