Trying to create a chip for motion-detection

I have a number of sensors in my rooms, and room cards that I’ve created with a chips on for lighting, fans, etc. I wanted to create a chip which changed based on the motion sensors in the rooms but I’m struggling.

card:
                        type: custom:mushroom-chips-card
                        chips:
                          - type: template
                            icon: mdi:motion-sensor
                            entity: binary_sensor.kitchen_sensor_motion
                            card_mod:
                              style: |
                                ha-card {
                                  {% if is_state('binary_sensor.kitchen_sensor_motion', 'off') %}
                                    --card-mod-icon-color: rgba(221, 235, 157, 0.5);
                                    --card-mod-icon: mdi:motion-sensor-off;
                                  {% elif is_state('binary_sensor.kitchen_sensor_motion', 'on') %}
                                    --card-mod-icon-color: rgba(221, 235, 157, 0.8);
                                    --card-mod-icon: mdi:motion-sensor;
                                  {% endif %}
                                  padding: 5px!important;
                                  border-radius: 100px!important;
                                }

Right now, it changes the icon and that works perfectly - but changes the color of the icon, rather than the background of the chip - have I missed the code here to change this?

Aha, the answer was --chip-background :slight_smile: