Saving random HS colors and recalling

Configuration
6 
service: light.turn_on
data:
  hs_color:
    - "{{ states('input_number.hs_color_of_the_day_hue') | int(0) }}"
    - "{{ states('input_number.hs_color_of_the_day_saturation') | int(0) }}"
target:
  entity_id: light.kitchen_color_lights

To get an entity’s state value, use the states() function, not state_attr()