This is a customized dimmer suitable for SmartGlass

The actual effect:

You may not need an exact replica of this one. I've provided the Fusion 360 file for you to customize, and I've also uploaded a blank decoration insert model, which might be a better starting point:

https://makerworld.com/en/models/1128100#profileId-1127851

The potentiometer knob is posted separately here:

https://makerworld.com/en/models/1127762#profileId-1127467

The model comes with an LED insert that provides a point light source and diffuses the light beneath the white panel. Please use black filament to print the LED insert. The grooves of the potentiometer include a layer of bridging in the design, so no support is needed... although printing with support would yield better results.