Syncing (rgb_)color of template light with light

Hi all,
I’m trying to sync the state of a template light to an actual light. Everything is working so far, except the synchronization of the color. Is there anything I misconfigured or is that feature simply not implemented?

  0 light:
  1   - platform: template
  2     lights:
  3       #-snip-
 29       ledcontroller_templ:
 30         friendly_name: "Led Controller"
 31         turn_on:
 32           service: light.turn_on
 33           entity_id: light.ledcontroller
 34         turn_off:
 35           service: light.turn_off
 36           entity_id: light.ledcontroller
 37         set_level:
 38           service: light.turn_on
 39           entity_id: light.ledcontroller
 40           data:
 41             brightness: "{{ brightness }}"
 42         set_white_value:
 43           service: light.turn_on
 44           entity_id: light.ledcontroller
 45           data:
 46             white_value: "{{ white_value }}"
 47         set_color:
 48           service: light.turn_on
 49           entity_id: light.ledcontroller
 50           data:
 51             rgb_color: "{{ rgb_color }}"

Did you solve it?

Nope, I didn’t.