title: Toolbar icon tinting on Android
body: <p>I've noticed that using AppCompat themes, default toolbar icons get tinted by the attribute <code>colorControlNormal</code> in my style.</p>
  
  <pre><code>&lt;style name="MyTheme" parent="Theme.AppCompat"&gt;
      &lt;item name="colorControlNormal"&gt;@color/yellow&lt;/item&gt;
  &lt;/style&gt;
  </code></pre>
  
  <p><img src="https://i.stack.imgur.com/XJUVA.png" alt="enter image description here"></p>
  
  <p>As you can see above, however, it does not happen with all icons. I provided the "plus" sign, which I got from the official icons, and it does not get tinted (I used the "white" version of the png). From what I have understood from this <a href="https://stackoverflow.com/questions/25889242/what-are-alpha-only-icons">question</a>, system tints only icons with just an alpha channel. Is this true?</p>
  
  <p><strong>If so</strong>: Is there a place where I can find alpha-defined, official material icons? If not - and if Toolbar icons need to be alpha-only to be tinted - how is Google expecting us to use provided icons in a Toolbar?</p>
  
  <p>Somewhere in the SDK I found some icons ending in <code>_alpha.png</code>, and they actually get tinted well. However I need the full set of material icons, and from the official sources I could only find <code>white</code>, <code>grey600</code> and <code>black</code> ones. </p>
  
  <p>Applying a <code>ColorFilter</code> at runtime would be slightly painful, and my actual Toolbar - with some icons tinted, some others not - looks quite bad.</p>