fischertechnik stone for TTP223 Touch Switch Sensor

Basic fischertechnik stone for TTP223 Touch Switch Sensor. My color code is red for ‘normal’ touch behaviour, and black for the modules with solder-jumper ‘B’ closed (T-flipflop On/Off behaviour).

I've made two models. One has the PCB in view and one slim model (5mm thick) inspired by juh's https://www.printables.com/model/180416-touch-sensor-ttp223-for-fischertechnik

I printed the latter with transparent filament, so that the stone is a kind of diffuser for the LED at the bottom of the sensor.