The tone is basically to me dark and sad
"This Idea came to me one evening 'or' I looked at my TV. Perhaps you meant 'When'
1. Try various keywords in your search. You might want to use a thesaurus or keyword lists on actual image pages to identify other keywords you can use in your image search.2. Get inspiration from other people. It can be helpful to see what subjects or approaches other people have used for the same keyword.3. Realize filters are your friends. Many stock photography sites have introduced advanced search filters that can speed up your image searches and also increase your success rate.