Feature: Add color code option

[jin-ds]

Issue that this suggestion fixes

I subscribe to multiple calendars within the same Google Calendar account. Opening the dropdown doesn't differentiate between the different subscribed calendars.

Solution description

Having the option to add a colored dot in front of the Zoom meeting icon, for instance, would help me visualize which calendar has the scheduled meeting.

Alternatives considered

none

Additional context

No response

[davidneedham]

This is more or less a duplicate of #328