Change color of opened Garage

Hi,

I have connected an Shelly Door/Window Sensor and a Shelly 1 to my Garagedoor.

I also setup a cover to have the Status of the garage door as well as the command for open/close in one entity:

cover:
  - platform: template
    covers:
      garage_door:
        friendly_name: "Garagentor Cover"
        #value_template: "{{ is_state('binary_sensor.garage_torstatus_binary', 'on') }}"
        value_template: "{{ is_state('binary_sensor.shellydw2_garagentor_sensor_door', 'on') }}"
        open_cover:
          service: switch.turn_on
          data:
            entity_id: switch.shelly1_2
        close_cover:
          service: switch.turn_on
          data:
            entity_id: switch.shelly1_2
        icon_template: >-
          {% if states('binary_sensor.shellydw2_garagentor_sensor_door') == "on" %}
            mdi:garage-open
       	  {% else %}
            mdi:garage
          {% endif %}

So far it works, but the Icon of the door changes to purple if open. I want to have it in yellow. How can I do this?

Best Regards,
Johannes

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