Change icon color on Condition

I’m only aware of a method by using card_mod:


type: entities
show_header_toggle: false
state_color: true
entities:
  - entity: light.flur
    name: Flurlicht
    secondary_info: true
    card_mod:
      style:
        hui-generic-entity-row:
          $: |
            .info .secondary {color: red;}
            .info .secondary::before {
               content: "Garderobe changed at: {{ as_timestamp(states.light.garderobe.last_changed)|timestamp_custom('%d.%m.%y %H:%M', true) }}";
               color: green;
               }