Pull RGB color for front end card

Configuration
1

I am trying to make the color of a custom:button-card equal to the RGB color of my LED light. I have the template working correctly to pull the attribute of the RGB light. However, I am not able to input that into the card correctly to make the color change.

This is my current card

entity: light.living_room_lamp
state:
  - color: 'rgb(100, 224, 81)'
    value: 'on'
hold_action:
  action: more-info
name: Lamp
styles:
  card:
    - font-size: 16px
type: 'custom:button-card'

I am trying to change the color: to accept the value of
{{ state_attr('light.living_room_lamp', 'rgb_color') }}

However, when I put in the attribute, it gives no error but does not change the button color. Any suggestions by anyone?

2

The custom button card uses javascript templating, not jinja. See here: https://github.com/custom-cards/button-card#templates-support