Theme Builder is accessible with the same username and password you use on Backlot.
Theme Builder is available at the following location:
To login, use the same username and password that you use for Ooyala Backlot (https://backlot.ooyala.com).
If you do not have a Backlot account, click the Create Account link.
For the most effective way to work with Theme Builder, you should maximize the size of your web browser window. Otherwise, configuration settings and other controls in Theme Builder might be hidden from your view.