They kept the windows shut, if I recall, in sweltering heat.
I doubt if they wore the costumes that the portrait depicted.
Regarding the windows. That was the common thinking that it would prevent Disease, if I recall.
I love that quote about the jury, haven’t seen that before. It would change many outcomes of many trials if it still was practiced.
“The jury has the right to judge both the law as well as the fact in controversy.”
John Jay Georgia v. Brailsford, 1794