In my first marriage, I often brought work home from the office and continued work in the evening in my "home office."That home office was bright , both in paint and illumination. Then,my wife decided that she was going to wallpaper the room. I asked her not to make the room darker in any way.
She proceeded to install dark wallpaper. From then on, after dinner during the week, I went back to my formal office and often worked until midnight to 2 AM during the work week. I often wondered if she did it out of sheer arrogance of whether she wanted my out of the house in the evening. .
Well, that may be one of the reasons why it did not last.
maybe she was just looking for what she liked in the room and wasn't considering that it may affect you negatively.