Change card title color based on sensor state (Card-mod, right? Templating, right?)

This seems like a simple thing, but everything I try results in errors.

In the card below I want the title “Game Room” to change to orange when binary_sensor.game_room_mmwave_presence_zigbee_occupancy is on. Card-mod 3 is installed, and I have a reasonable amount of experience with templating in Lovelace.

My current code is below. Would really appreciate some guidance.

type: vertical-stack
cards:
  - type: horizontal-stack
    title: Game Room
    cards:
      - type: tile
        name: All Lights Off
        icon: mdi:lightbulb
        entity: scene.equipment_room_01_alexa_automation_2_toggame
        color: disabled
      - type: tile
        template: medium
        entity: light.game_room_game_room_fan
        name: Fan
        icon: mdi:fan
        color: blue
  - type: horizontal-stack
    cards:
      - type: tile
        template: medium
        entity: light.game_room_game_room_hallway_light
        name: Hall
        icon: mdi:dome-light
        color: blue
      - type: tile
        template: medium
        entity: light.game_room_game_room_recessed
        name: Cans
        icon: mdi:wall-sconce-round
        color: blue