Yes, you can change the colors you use for people and events as uch as you wish - here's how:
By default, resource locations are shared so that anybody at Humboldt can invite them to a meeting. If you prefer to restrict that list, follow these instructions (you must be logged into Gmail):
The Administrative Calendar holds many important dates to help you stay on top of your deadlines. Here's how to see it in either webmail (Google Apps) or Outlook:
Viewing additional calendars is toggle on or toggle off. By clicking on the co-workers calendar (under Other Calendars), you will see their calendar information. Also, there is an option to hide their calendar. If you hid their calendar, you will need to go into Calendar Settings and check the show in list option
Under the Other Calenders, enter the email address of the co-worker. This will open a dialog box where you may request access to their calendar. Once approved by your co-worker, the calendar will appear on the left side of your Calendar Screen.