This answer is honestly completely opinionated. For me, I think music is the closest thing we have to mind control. It can make you happy when you aren’t, or vice versa. It can make you do inexplicable dance moves that are just lovely. But this is a question completely up to you.
Answer:
Byzantine mosaic of Emperor Justinian and his attendants at San Vitale, Ravenna
Explanation:
Mosaic is made of tesserae, main color is gold and white, so it's bright. Justinian I is shown with halo, which is a symbol of a saint.
Answer:
Well I remember back in the renaissance or Shakespearean era, around when the black plague started theaters weren't indoors but rather outdoors. If you go that far back I guess people weren't kept cool but you have to more specific.
An example of what the theatre looked like
