For example, a red marker on the frames would indicate that no small talk is allowed.

A yellow marker might suggest that small talk is tolerated but should be approached with caution (e.g., avoid asking where the person was originally born or using a language other than the main language of the area).

A green marker would indicate that small talk is generally welcome on most topics.

You could even change the marker color on your frames to match your mood.

Do you think this would be a good idea?