Im currently using eventRender to change the background color of an event's cell (month view), but I'm hoping to take it further and change the cell to another color if theres 2 or more events on that date.
Something like:
eventRender: function(event, element, view)
if >2 events
{element.css("background-color", "orange"); }
else
{ element.css("background-color", "red");}