Template for RGBWW light

Hello

I want to create a template of an RGBWW light. When I add this to configuration.yaml, I will get a light:

template:
  - light:
    - name: "WLED RGBWW"
      unique_id: wled_rgbww_virtual
#      supported_color_modes: "RGBWW"
#      color_mode: "RGBWW"
      state: >-
        {% if is_state('input_number.wled_white_brightness', 'uit') %}
          off
        {% else %}
          on
        {% endif %}
      turn_on:
        service: input_number.wled_white_brightness
        data:
          option: flame
        target:
          entity_id: input_number.wled_white_brightness
      turn_off:
        service: input_number.wled_white_brightness
        data:
          option: uit
        target:
          entity_id: input_number.wled_white_brightness

In the next step, I uncommented the color_mode lines. This approach is not working. I get errors like this:

Invalid config for ‘template’ at configuration.yaml, line 209: ‘supported_color_modes’ is an invalid option for ‘template’, check: light->0->supported_color_modes Invalid config for ‘template’ at configuration.yaml, line 210: ‘color_mode’ is an invalid option for ‘template’, check: light->0->color_mode

I tried to figure out how to do the correct configuration. Light entity | Home Assistant Developer Docs seems to be wrong because that’s not how it works. I guess the templates are somthing different but I was not able to find documentation for that.
Can someone give me a hint how to crate an RGBWW light as template?

Background: I want to control my WS2805/LED RGBCCT strip. The WLED integration is not working well. Therefore, my idea was to use my own template and control WLED via http/json.

Thank you very much.

It’s here: https://www.home-assistant.io/integrations/template/#light

Thank you very much. Now it makes more sense.
After thinking about, I guess I will need another solution.
The issue here is that WLED has no way to send status updates. This means home assistant has to poll all the time which is not a good solution.