Binary Sensor Alert Card not changing color when ulm_active_state is true

[longhtran91]

Describe the bug
Here is my yaml

    - type: "custom:button-card"
      template: card_binary_sensor_alert
      entity: binary_sensor.top_left_gas_contact
      variables:
          ulm_card_binary_sensor_alert_name: Top Left
          ulm_card_binary_sensor_alert_color: green
          ulm_card_binary_sensor_alert_force_background_color: false
          ulm_card_binary_sensor_alert_icon: mdi:gas-burner

Here is the screenshot:

Expected behavior
The gas-burner is blue instead of green (ulm_card_binary_sensor_alert_color)