scene
object
  colour 255 255 255
  sphere 0 0 3 0.75
end_object
object
  colour 255 100 50
  sphere 0 0 0 0.75
end_object
object
  colour 50 255 100
  sphere 0 -3 0 0.75
end_object
object
  colour 50 100 255
  sphere 0 3 0 0.75
end_object
end_scene