It is as my title says.
My company likes to change color tags on events but do not want the events to be changed in any other way. We do this to denote changes in the event wither changing the type of work needed or marking it as urgent.
Recently we have not been able to change the color without providing an end date that is forced to be present day or a future date. This is annoying as it makes for a cluttered calendar of events when we prefer just having it stay on the assigned day.