Event colors in weekly schedules

Configured normal and special events in weekly schedules (Boolean, Enum, Numeric and String) display different colors according to the event state.

These are the default colors for all four schedules:

Schedule Name	Color	Value
Boolean Schedule	Green	true
	Red	false
	Gray	null
Enum Schedule	14 default colors	This has 14 default colors. The color cycle repeats if there are more that fourteen enum values.
Enum Schedule	silver gray	null
Numeric Schedule	Green	any event
Numeric Schedule	Gray	null
String Schedule	Green	any event
String Schedule	Gray	null