Global calendar shows events in blue
 

Hi,
I have recently set up a calendar for all employees at my works. They all
have their own personal calendar which links to a global calendar via the
Free/Busy folder on the server.

However the global calendar only shows events/meetings etc in blue, even if
the user uses a different color on his/her local calendar. How would I go
about showing other colors than blue in the global calendar?

thanks in advance