How to style using card_mod: customization in JS not working

[Mariusthvdb (Marius)]

Solved, by Thomas, of course.

config.entity is the entity id, not the state object

see 🔹 Auto-entities - Automatically fill cards with entities - #134 by Mariusthvdb

                type: custom:template-entity-row
                style: |
                  :host {
                    --paper-item-icon-color:
                      {% set id = config.entity.split('.')[1] %}
                      {% set repo = 'input_boolean.' + id %}
                      {% if states(repo) == 'on' %} gold
                      {% else %} green
                      {% endif %}
                      ;

resulting in:

short template version:

                type: custom:template-entity-row
                style: |
                  :host {
                    --paper-item-icon-color:
                      {% set id = config.entity.split('.')[1] %}
                      {% set repo = 'input_boolean.' + id %}
                      {{'gold' if is_state(repo,'on') else 'green'}}
                      ;