Buildings designed with careful attention to aesthetics arouse and enlighten their occupants and that promotes their good health.
Certainly I've had the experience of thinking a person was one thing, and finding out they were another.
In this movie they took them up in space. They're floating around and doing zero gravity stuff. Well, they had to do it all on wires. All the wires had to be painted black against this black background. If you didn't light it properly you could see the wires. Drove them crazy!