How to change the color of an entity-button icon

As the title suggests…

I used to use:

type: button
tap_action:
  action: toggle
hold_action:
  action: more-info
show_icon: true
show_name: true
entity: light.living_room_right
style: 'ha-icon{fill:red !important;}

But it no longer works with HA 0.110

Thanks