title: How can I change highlight (focused) color of the triangle in a Spinner
body: <p>I am currently working on an Android TV app, so the focus color is very important.</p>
  
  <p>I have added some spinners in my layout and I am trying to change the selector color.</p>
  
  <p>Primary/secondary/Accentcolor are not doing anything.</p>
  
  <p>First thing I have is to put the spinners in layout. The top one is the one I am working on, and the bottom one is the default Appcompat</p>
  
  <p>On the top one, I have added a color selector:</p>
  
  <pre><code>&lt;Spinner
      android:id="@+id/spinner1"
      android:layout_width="match_parent"
      android:background="@drawable/selector"
      android:layout_height="wrap_content"
      android:focusable="true"
      android:padding="0dp" /&gt;
  
  
  &lt;Spinner
      android:id="@+id/spinner2"
      android:layout_width="match_parent"
      android:layout_height="wrap_content"
      android:focusable="true"
      android:padding="0dp" /&gt;
  </code></pre>
  
  <p><strong>selector.xml</strong></p>
  
  <pre><code>&lt;selector xmlns:android="http://schemas.android.com/apk/res/android"&gt;
      &lt;item android:state_pressed="true"
          android:drawable="@color/pressed" /&gt;
      &lt;item android:state_focused="true"
          android:drawable="@color/focused" /&gt;
      &lt;item android:state_selected="true"
          android:drawable="@color/selected" /&gt;
      &lt;item android:state_hovered="true"
          android:drawable="@color/hovered" /&gt;
      &lt;item android:drawable="@color/transpa" /&gt;
  &lt;/selector&gt;
  </code></pre>
  
  <p><img src="https://i.imgur.com/hOBDkRX.png" alt="enter link description here"></p>
  
  <p>This is obvious, but the triangle has been removed due to the new background which is simply a rectangle.</p>
  
  <p>What I would like to achieve is this selection but with my higlight color, and not the default grey:</p>
  
  <p><img src="https://i.imgur.com/NXlyIlQ.png" alt="enter link description here"></p>
  
  <p>And this is current result:</p>
  
  <p><img src="https://i.imgur.com/2CIFJBr.png" alt="enter link description here"></p>