I'm using
calendar.MonthViewSettings.SetDynamicResource (VisualElement.StyleProperty, "some.resource")
to set dynamic styles on SfCalendar.MonthViewSettings. However it seems following properties cannot be set using DynamicResource and they have their default (built-in) values:
MonthViewSettings.TodayTextColorProperty
MonthViewSettings.SelectedDayTextColorProperty
MonthViewSettings.DateSelectionColorProperty
When setting these properties directly (i.e. not using Xamarin Forms styles but directly on SfCalendar instance) they are working as expected.