- alias: turn_it_off_after_10m
  trigger:
    - platform: state
      entity_id: light.bedroom
      state: 'on'
      for: '00:10:00'
    condition:
      ...
    action:
      - service: light.turn_off
        data_template:
          entity_id: "{{ trigger.entity_id }}"


- alias: 'Get Random Time'
     trigger:
     platform: time
     after: '21:00:00'
   action:
     - service: input_slider.select_value
       data_template:
         entity_id: input_slider.hour
         value: '{{ (range(22, 23) | random) }}'
     - service: input_slider.select_value
       data_template:
         entity_id: input_slider.random_minute
         value: '{{ (range(30, 45) | random) }}'

Then simply use that in your light turn off automation:

 - alias: 'Turn lights off'
   trigger:
     platform: template
     value_template: '{{ now.hour == (states.input_slider.random_hour.state | int) and now.minute == (states.input_slider.random_minute.state | int) }}'
   action:
     - service: light.turn_off
       data: 
         entity_id: light.hue_color_lamp_1
 
 
- automation:
  alias: Random GLeft
  initial_state: False
  hide_entity: False
trigger:
  platform: time
  seconds: '/5'
action:
  service: homeassistant.turn_on
  entity_id:
    - light.gright
  data:
    effect: random
    transition: 1
    brightness: 255`