Setting icon color change on active?

Configuration Frontend
1

Hi, im using the Kibibit dark cards theme and have 2 buttons, light on and light off. I cannot see which one is active as there is nothing to indicate on the button which one is active.

Is there a way to change the color of the active button? I know with the stock hassio theme this was done by default.

Thanks

2

I use the custom button-card and card-mod mods for that, not sure if it works without.

              - type: custom:button-card
                entity: light.led_strip_2
                state:
                  - value: 'on'
                    styles:
                       icon:
                        - color: blue
                  - value: 'off'
                    styles:
                      icon:
                        - color: white

The color is white when off, blue when on (cause the strip is blue).