[horde] Public cal. task colors

[Chuck Hagenbuch]

Quoting dhottinger at harrisonburg.k12.va.us:

> This works fine.  However, it is going to be quite cumbersome for  
> the number of public calendars we have.

Colors are for categories, not for calendars. If you use different  
categories for every event, that's a different matter of course...

-chuck

-- 
"we are plastered to the windshield of the bus that is time." - Chris