Since the homematic door lock actuator is only available in white, here is a cover for every color you can print.
It is simply placed on the door lock and snaps into place with the 2 screws on the side. It can be removed again by pressing lightly.
This model covers the upper wheel, which can therefore no longer be turned manually. This is intentional, as in my opinion it is very unstable and breaks off quickly when used (I speak from experience).
The 3 buttons in the middle are simply left open here and can be operated through the cover if necessary