I left out the following descriptions of the room. Thank you very much for your invaluable help.

1) I left out the following description of the room.
The rooms are all set in a way that one cannot see from one room to another; besides, each room has a Gothic window (of stained glass) and ornaments of the same colour.
2) Only the last one is all black with a red window. All the guests are enjoying themselves and dancing. However, when a clock with a pendulum strikes the hours, the orchestra stops playing and the people stop dancing, as if they were all frozen.
3) They are disconcerted and become pale. They all resume their activities as soon as the clock finishes chiming. 4) When the clock strikes midnight, they notice the presence of a masked figure. He is covered in blood and wears a red, grave-like costume and a mask on his face that makes him similar to a dead man.
5) The windowpanes and the ornaments of the first room are blue, of the second red, of the third green , of the fourth orange, of the fifth white and of the sixth violet.
6) There are no candles in the rooms but only a tripod with a brazier of fire which illuminates the room producing fantastic shapes.

1 - 4 = See your last post.

5. comma needed after "white"

6. comma needed after "rooms"

You're welcome! Here's a description of the room with the additional details you provided:

1) The rooms in this setting are arranged in a way that prevents one from seeing into the other rooms. Each room is adorned with Gothic windows made of stained glass, which adds a unique touch to the atmosphere.

2) Among the rooms, the last one stands out as it is completely black, with a red window. In this room, all the guests are having a wonderful time, dancing and enjoying themselves. However, when a clock with a pendulum strikes the hours, something peculiar happens. The orchestra suddenly halts their music, and all the people stop dancing, as if they were frozen in time.

3) The unexpected pause leaves the guests disconcerted, causing them to turn pale. However, once the clock finishes chiming, they quickly resume their activities as if nothing happened.

4) As the clock strikes midnight, something even more unusual occurs. The guests notice the presence of a masked figure in their midst. This figure is covered in blood and dressed in a red, tomb-like costume. Adding to the eerie effect, the figure wears a mask that resembles that of a dead man.

5) Each room has its own distinct color scheme. The windowpanes and ornaments in the first room are blue, in the second room they are red, in the third room they are green, in the fourth room they are orange, in the fifth room they are white, and in the sixth room they are violet. These vibrant colors contribute to the overall ambiance of each room.

6) Interestingly, there are no candles illuminating the rooms. Instead, a tripod with a brazier of fire is used to provide light. The flickering flames from the brazier create mesmerizing shapes and patterns that add to the fantastical atmosphere of the rooms.

I hope this helps you visualize the room better! Let me know if you have any more questions.