Outlook 2007 calendar to sharepoint 2007 with categories & colours

Hi all

I have set up a calendar in sharepoint 2007 which is linked in to outlook 2007.

My question is, is there an easy way (without 3rd party apps) to colour code outlook entries on the sharepoint calender view.

I have tried the Pathtosharepoint example, and although good, it only allows to add colours to new entries, or manually add a colour after entry.

Can this be done automatically via scripting or via copying over the outlook category?

Thanks in advance

OS = XP
Outlook = 2007
Sharepoint = 2007