When there are no results for a search:
- A red warning is shown where the results counter (and loading indicator) are, indicating "No results".
- The label is shown initially in red (#D11813) but it will fade into grey (#999).
- On subsequent modifications of the query, if there are still no results, the label will become red (and fade) again. That will help users to notice if they are still typing despite not getting any results.