title: How to use tint for vector drawable in compatibility mode?
body: <p>I'm trying to apply tint for ImageButton that uses vector drawable:</p>
  
  <pre><code>&lt;android.support.v7.widget.AppCompatImageButton
             android:id="@+id/flashlight_button"
             app:srcCompat="@drawable/ic_flash_off_black_24dp"
             android:tint="@color/icon_states_color"
             /&gt;
  </code></pre>
  
  <p>This will work Lollipop +, but will crash on Kitkat. </p>
  
  <p>How should do ColorList tint for Kitkat in app compat world?</p>