Walter Gropius once said: "Creating moods is a task of education". I want to know more about colored light and their effect on moods.
The following sentences are from the book "Light: The Shape of Space" by Lou Michel. Light effects are optical illusions of psychological influences of shapes, colors and textures.

We don't see light, we just see the effect of light.
It's not the void, but the colored, textured and patterned planes on which the human eye fixates. As the quality and quantity of the lighting change and alteratings are made to surfaces of the dominant boundaries, so changed the mood.

Lighting alone can create conspicuous change in the appeareance of space. When the lighting is raised in a dimly illuminated room, it appears larger without any change having taken place in its physical size or the surfacing of its boundaries.
"To create architectural space then is not to design with light, but to design with the effects of ligth.

The Use of symmetry in the arranging of the floorplans, walls and ceilings can give calmness.
Think about the human scale of the space and the amount of light.