[kronolith] Colorization by tags

[Ralf Lang]

> I really miss the possibility to select a color by tag or category for
> an event since this gives a fast and clear summary at first glance.
> 
> Uli

We use shared, topic-related calendars. Only drawback is current activesync 
implementation won't sync more than one calendar.

-- 
Ralf Lang
Linux Consultant / Developer

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