I suppose this might have been class related (not sure) but the idea of wearing black for a period of time and everyone knowing it was due to a period of mourning.
With fresh bereavements in the past I’ve struggled with people being happy go lucky during periods of grief.
currently I told a manager I am on leave for the week and she replied ‘oh nice, I’m on holiday soon too.’ This manager has been piling the work on too and I dread her asking how my holiday was when I return or expecting me to be rejuvenated. Not just her, but others who see leave=holiday. I don’t need everyone to know my business but there’s no way I’d be replying ‘good thanks!’ either.