supertux/data/images/objects/torch/flame.sprite

(supertux-sprite
  (action
    (name "default")
    (fps 16)
    (hitbox -2 30 14 128)
    (images "flame1.png"
            "flame2.png"
            "flame3.png"
            "flame4.png"
            )
  )
  (action
    (name "greyscale")
    (fps 16)
    (hitbox -2 30 14 128)
    (images "greyscale/flame1.png"
            "greyscale/flame2.png"
            "greyscale/flame3.png"
            "greyscale/flame4.png"
            )
  )
)