Can you export or share Categories in Outlook 2011? Is there any way to export or otherwise copy Categories, with colors, between Users/Macs?  They also don't yet synch to Exchange 2010, from what I can tell.

I'll likely develop a default new user profile and then run an AppleScript to add the Exchange account based on the currently logged in user's credentials, so I can set up defaults that way, hoping that there's a way to export or copy categories however.
Sadly, and unfortunatly No. This is something I spend a few days on recently, and out of interest, it can't be done on the Windows version either. There is no way to keep these categories intact, and it can be a huge problem, especially when sharing items with others since the minute they make a change to a shared item, the categories are overwritten.

You could possibly however use an AppleScript to add them manually, I haven't tried thought.