wrote

Years ago when I used to paint we did a basement for a doctor. We
sprayed the ceiling black. It turned out real nice actually. The
black paint made everything sorta disappear yet everything was still
accessible.

Smile, that does work too. On ships (I'm retired Navy) we do that in rooms
that have to be dark to maintain night-vision for bridge workers. I've seen
many a navy person since finish off a basement or such with the same simple
spray treatment. Just depends on how you want the room to be used.