Bug or Feature in StandardModule: calender

[bjoern]

Hello,
think i have found a bug in calender! (or is it a feature)
i have googlecalender. the most of my entry have a green color. for some special entrys i have another color. red and blue.
but the entrys in red and blue will not showing me in calender. now i have changed the color to green and now the entrys are avaible in calender!