title: Angular2 Material: iterating through select options
body: <p>I have a select options list that is opened through the method open() but I also want to iterate and highlight through the list (i.e. background: red on the highlighted option) every few seconds and loop through it.  Is this possible? </p>
  
  <p><a href="https://stackblitz.com/edit/angular-kc1uhi?file=app%2Fselect-overview-example.ts" rel="nofollow noreferrer">https://stackblitz.com/edit/angular-kc1uhi?file=app%2Fselect-overview-example.ts</a></p>