I have two users who are sharing calendars with other users. I have lots of people sharing calendars but these two intermittently pick up one of their other user's color categories. In other words, user a is sharing with user b, c, d, e but for some reason intermittently, they pick up user c color categories not their own. I am not finding any documentation on this but I think it has to do with rights on the other user's calendar. Any ideas????