iCal: How do I add new event types with new colors? So iCal has "Work" and "Home" as two of its default event types associated with the colors green and blue respectively.

How do I add a third event type, say "School", and set its color to be something other than blue or green, say red?
You can add one on iCloud or on your Mac. Just navigate to 'File' and create a 'New Calendar'. 



And there, you'll be able to create a new calendar, and with 'Get Info' (right-click), you can choose your color.