service vendor.lights-tangotron  /vendor/bin/hw/android.hardware.lights-service.tangorpro
    interface aidl android.hardware.light.ILights/default
    class hal
    user system
    group system
    # shutting off lights while powering-off
    shutdown critical

on post-fs
    chown system system /sys/class/leds/green/brightness
    chmod 664 /sys/class/leds/green/brightness