I have Outlook 2007 Pro with custom color categories assigned to my
appointments. My mailbox was not completing it's offline sync with my
Exchange server, so I delete my OST file to start over.

Now when I run Outlook with a rebuilt OST file, all my calendar categories
are missing the colors I had assigned. The categories are still saved in
each appointment, but all the colors I assigned to my categories have been
wiped out.

Is there any way to restore the color assignments to my categories?