If you use Google Calendar, you probably use multiple calendars to colour-code your events for easy organisation. Now, Google's rolling out a new feature that lets you colour-code individual events, instead of just entire calendars. That way, you can keep events in a specific category, but draw more attention to them with a specific colour.Just click the box to the left of the title in an event and choose the colour for that event. If it's a recurring event, you can change all occurrences or just that one occurrence. The feature seems to be rolling out gradually, so if you don't have it yet, check back periodically and see if it shows up.