These docs are for an old release. Info on upgrading to version 2/3
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Event Coloring prior to version 1.5

Prior to v1.5, you must modify the default color that affects all events by adding some css in the following form:

.fc-event,
.fc-agenda .fc-event-time,
.fc-event a {
  background-color: black; /* background color */
  border-color: black;     /* border color */
  color: red;              /* text color */
  }

You can also change the color for certain events by using the className property of each Event Object. Here is an example of the CSS you would write if your className was “holiday”:

.holiday,
.fc-agenda .holiday .fc-event-time,
.holiday a {
  background-color: green; /* background color */
  border-color: green;     /* border color */
  color: yellow;           /* text color */
  }

If you are using the “default” and “className” techniques together, make sure the CSS for the default technique comes first.

Versions prior to 1.3 had different ways of setting colors through CSS. Check your version’s fullcalendar.css for an example.