Normally, events whose Availability field is set to Free get a washed out color.
To change the Calendar Availability setting:
- Tap the Calendars icon
- Tap the (i) of the Calendar who's availability you want to change
- Tap Availability
- Tap Default
Default Visual difference between Free and Busy
Always Busy All events are displayed as Busy, independent of their actual availability
Always Free All events are displayed as Free, independent of their actual availability
Free as Busy Free events are displayed as Busy (no washed out colors)
Busy as Free Busy events are displayed as Free (all colors washed out)