code: def is_green(fuel_type):
      """Return a green RGB value if a facility uses a renewable fuel type"""
      if fuel_type.lower() in (
          "nuclear",
          "water",
          "wind",
          "hydro",
          "biomass",
          "solar",
          "geothermal",
      ):
          return [10, 230, 120]
      return [230, 158, 10]
  
label_desc: Use image node_id 1 for calling a global function with example usage: is_green(fuel_type) and returns: list, list