Related Clues:
- Back of cooling tower is dark
- Dark mood cause
- Atmosphere of many a Poe story
- Depressing atmosphere
- Depression that can be banished if shed light on
- Good weaver of yarns in the twilight
- Cheerlessness
- Dark disheartened girl, low, retiring
- Despondency of union member after swapping sides?
- Melancholy state
- Partner of 47-Across
- See plans changed for lack of colour
- Melancholy mood
- Cheerless atmosphere
- What a rain cloud over a head may represent, in comics