i am currently testing zimbra with respect to how well outlook, isync and the webinterface work together. one question that immediately popped up for me was the way multiple calendars are handled. both ical as well as the webinterface easily display multiple calendars in a single view with different colours for each calendar. in outlook on the other hand, this concept doesn't seem to exist. multiple calendars are displayed side by side if multiple calendars are enabled instead of different colours in a single view. however, events in a calendar can be put into categories with different colours.

i guess there is no possibility to make outlook behave like the webinterface and ical? on the other hand, if i make use of categories in outlook and merge all calendars into one, i won't be able to differentiate them from the colors in ical and the webinterface, right? is there any solution to this issue?