Adding dimtime to the original script.

timed_motion_light_plus_light_strength_brightness.yaml

blueprint:
  name: Timed Motion-activated Dimmable Light
  description: Turn on a light when motion is detected within a certain time contraint.
  domain: automation
  source_url: https://github.com/home-assistant/core/blob/dev/homeassistant/components/automation/blueprints/motion_light.yaml
  input:
    motion_entity:
      name: Motion Sensor
      selector:
        entity:
          domain: binary_sensor
          device_class: motion
    light_target:
      name: Light
      selector:
        target:
          entity:
            domain: light
    light_strength:
      name: Light Strength
      description: Light level for configured lamps on trigger.
      default: 50
      selector:
        number:
          min: 0
          max: 100
    light_transition_time:
      name: 'Light Transition Time On/Off'
      description: 'Configure the dimming speed in seconds.'
      default: 0.1
      selector:
        number:
          min: 0
          max: 30
          step: 1
          mode: slider
    time_from:
      name: 'Timeslot from'
      default: "22:00:00"
      selector:
        time:
    time_to:
      name: 'Timeslot to'
      default: "07:00:00"
      selector:
        time:
    no_motion_wait:
      name: Wait time
      description: Time to leave the light on after last motion is detected.
      default: 120
      selector:
        number:
          min: 0
          max: 3600
          unit_of_measurement: seconds

# If motion is detected within the delay,
# we restart the script.
mode: restart
max_exceeded: silent

trigger:
  platform: state
  entity_id: !input motion_entity
  from: "off"
  to: "on"

condition:
  - condition: time
    after: !input time_from
    before: !input time_to

action:
  - service: light.turn_on
    target: !input light_target
    data:
      brightness_pct: !input light_strength
      transition: !input light_transition_time
  - wait_for_trigger:
      platform: state
      entity_id: !input motion_entity
      from: "on"
      to: "off"
  - delay: !input no_motion_wait
  - service: light.turn_off
    target: !input light_target
    data:
      transition: !input light_transition_time

I love how well this works! Thank you!

Any way to also set the color from this? Or, call a scene?

Nice Blueprint, is It possible for you mutify your blueprint to weekdays allso ?