I'm trying to create a sort of dark mood in my story. It's not horror, but kind of a "bad things have been happening" lonely type mood. Obviously, saying something like "The sky was as gray as her heart" and using a ton of purple prose is just stupid. But what if you are more subtle, and mention stuff like rain, wind, cold, dim/flickering lights, etc. Can this work well to set a good tone, or is it something to steer away from or considered cliche`? Thanks.