Use booking colours to differentiate between practitioners or types of bookings, it's up to you.
These are the ways colours can be set in BetterHQ.
This is the priority / hierarchical order:
FIRST PRIORITY - SMS 2 way confirmation (if 2 way SMS is set by the user, and a client replies with Decline or Confirm and the user has these colours set in settings, these colours take priority over all other appointment colour settings)
SECOND PRIORITY - Paid colour status (if the user has a paid appointment status colour set, display the Paid colour status. This would not be displayed if the user has 2 way SMS on and the client replied with a Confirm/Decline response.
THIRD PRIORITY - Product colour (if 2 way reply or paid colour is not set, display the product colour for appointment if set for the product)
FORTH PRIORITY - Team Member colour (if all of the above are not set or Active, then display the team member colour if one has been set by the user).