title: How to programatically set the colour of a RadioButton Android Circle
body: <p>I want to change the actual circle of the <code>RadioButton</code>.</p>
  
  <p>I have looked all over StackOverflow and nothing seems to work.</p>
  
  <p>I am using API 17 and cannot use a <code>ColorStateList</code>. Custom drawables seem to mess us the look and feel of things.</p>
  
  <p>I want the same effect as changing the button hint but I need to do it programmatically.</p>
  
  <p>I'm sure I must please missing something very simple!</p>