scripts.yaml

# script.rainbow_light

rainbow_light:
  alias: rainbow light
  mode: single

  fields:
    entity:
      description: The entity that will be rainbowed
      example: light.bathroom

  variables:
    colors: |-
      {{ [[0.217,0.077], [0.157,0.05], [0.136,0.04], [0.137,0.065],
          [0.141,0.137], [0.146,0.238], [0.151,0.343], [0.157,0.457],
          [0.164,0.591], [0.17,0.703], [0.172,0.747], [0.199,0.724],
          [0.269,0.665], [0.36,0.588], [0.444,0.517], [0.527,0.447],
          [0.612,0.374], [0.677,0.319], [0.701,0.299], [0.667,0.284],
          [0.581,0.245], [0.477,0.196], [0.385,0.155], [0.301,0.116], 
          [0.217,0.077]] }}

  sequence:
    - service: light.turn_on
      data_template:
        xy_color: |
          {{  colors[(now().second/2.5)|round(0)] }}
        transition: 50
        entity_id: "{{ entity }}"