CkEditor4 Toolbar Not responding to config

When trying to modify the toolbar, say make the toolbar a basic toolbar, the editor seems to completely ignore everything.

   var editor = CKEDITOR.replace( 'eventDescription',
   {
       toolbar: 'Basic',
       uiColor: '#9AB8F3'
   }
   );

The toolbar only shows the 'standard' toolbar. I can't even get a full toolbar to show up.

Any ideas on why this may be doing this?