Those playful fancies of the mighty sky. – Albert Smith (clouds)

The clouds were drifting over the moon at their giddiest speed, at one time wholly obscuring her, at another, suffering her to burst forth in full splendor and shed her light on all the objects around; anon, driving over her again, with increased velocity, and shrouding everything in darkness. – Charles Dickens, The Pickwick Papers

It was very dark; but in the murky sky there were masses of cloud which shone with a lurid light, like monstrous heaps of copper that had been heated in a furnace, and were growing cold. – Charles Dickens, Martin Chuzzlewit, Chapter XLII