Monthly view: different styles for all-day events vs. time span events

[michaelspunkt]

I would appreciate it if time span events (those which do not span a whole day) would appear without background colour but with calendar specific font colour. Example: all-day event checked: background colour (as is) time span event from day 1, 5pm to day 3, 4am: day 1: font colour day 2: background day 3: font colour