What the heck is the "top menu" referred to in step 2? I don't have get any menu when I tap the event on the calendar.
Changing the color of events on Google calendar, helps you identify events with the same subject at a glance. The Android version of Google Calendar lets you easily assign different colors to each events, by doing as follows:
If you have already create an event and want to change the color:
1. Tap the event on the calendar
2. Tap the Palette icon on the top menu
3. Select the event colour
If you are going to create a new event and want to assign a color to the task:
1. Start creating a new event
2. Tap the Palette button next to the account name, you are going to create event for
3. Set a color for the new event
See Also:
How to Add a Recurring Event in Google Calendar
How to Delete Recurring Event in Google Calendar