title: How to change android design support library FAB Button border color?
body: <p>I want to change fab button border color.
  border color is white, inside color is black or transparent</p>
  
  <p>I'd like my button to look like this:</p>
  
  <p><a href="https://i.stack.imgur.com/z7dYv.png" rel="noreferrer"><img src="https://i.stack.imgur.com/z7dYv.png" alt="This is how it should look like"></a></p>