title: Styling a Spinner, appcompat, material
body: <p>So my app theme extends from AppCompat's Material Light theme with Dark Action Bar.</p>
  
  <p>I applied an accent color.</p>
  
  <p>Now I am trying to use a Spinner on a dark backround and because of the theme, the spinner has a dark gray arrow which changes to accent color when pressed.</p>
  
  <p>How can I make this spinner's arrow white so that it is prominent on a dark background?</p>
  
  <p>Here's the image of the Spinner:
  <img src="https://i.stack.imgur.com/O9sSX.png" alt="enter image description here"></p>