How the colours of objects and light affect human emotions, performance and health. The need for a holistic approach to design indoor environment.

Mood regulation: The paper discusses how colors and lights can influence mood, with 'cool colors' like blue and green being relaxing and peaceful, and 'warm colors' like red and yellow being activating and arousing.

Alertness and performance: The paper discusses how light, particularly cool light rich in short wavelength radiations, can affect alertness and performance by inducing melatonin suppression.

Cognitive function and memory: The paper discusses how light can affect cognitive performances in educational and office environments, stimulating attention and alertness.

Seasonal affective disorder: The paper discusses how light, particularly blue enriched light, can have a positive effect on seasonal affective disorder by reducing symptoms.

Lighting Design Considerations: The paper discusses the need for a holistic approach in designing indoor environments, taking into account the effects of colors and lights on human emotions, performance, and health.