How do I change an event's background color with different colors, in fullcalendar?

I'm using the last version of fullcalendar, I looked on documentation how change background color event, but I don't know how make to different events.
I need for code sample with events red, blue, green, like the following picture:

I see this code, on document site, but I can't to apply 2 colors:

$('#calendar').fullCalendar({
  editable: true,
  events: [{
    title: 'Teste1',
    start: new Date(y, m, d, 10, 30),
    allDay: false,
    editable: false
  }, {
    title: 'Teste2',
    start: new Date(y, m, d, 11, 40),
    allDay: false
  }],
  eventColor: '#378006'
});