If you ever assign a team to an appointment and the color doesn't change, or it's not the color you wanted it to be, please check that they are actually assigned as a team, and not solely as cleaners that make up that team.
To set a team you've to go to Settings > Teams at the ZenMaid's side bar menu there you can assign the name, color and members of the new team or edit the old ones.
If you've already did this and the color doesn't change when you assign a team, try to set the proper color set at "Colors and Filters" in the Calendar page.
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