Visually differentiate between enabled and disabled schedules

[jeremiahsmall]

Currently, enabled and disabled schedules look the same on the calendar. It would be preferable if one could at a glance know which ones are enabled and which ones are not (when all schedules are shown).

Ideally, the color coding would also preserve the type of schedule. Maybe use a darker shade for enabled scheduled, and a light shade of the same schedule type, to indicate it's disabled?

Alternatively, instead of messing with the fill color, we could use some type of icon, strike-through text, greyed out text, etc, to indicate the schedule is disabled.

Or we could just use a dedicated color for any disabled scheduled, regardless of schedule type.

Whatever is easiest now, we can refactor into a more visually appealing solution later on.