Change the calendar styles

functions.php

<?php
//* Do NOT include the opening php tag shown above. Copy the code shown below.

//*  use the filter  wfea_cal_options  for the list view

//* the following example removes  the event time
//* changes background to black
//* sets the pop up to youtube style
//* see full list of options here

add_filter('wfea_cal_options', function($options) {
      $options['fullcalendar']['displayEventTime'] = false;
      $options['fullcalendar']['eventBackgroundColor'] = '#000';
      $options['qtip']['classes'] = 'qtip-youtube';
      return $options;
});