Red: stimulates and excites the nervous system, increases adrenaline secretion and enhances blood circulation. But too much exposure to red will cause anxiety and physical and mental stress, which will make people who are prone to fatigue feel exhausted. Therefore, too much red should be avoided in the dormitory or study.

Orange: it produces vitality, induces appetite, helps to absorb calcium, and helps to restore and maintain health. This color is suitable for recreation rooms, kitchens and other places, not for bedrooms and study rooms.

Yellow: it can stimulate the nervous system and digestive system and strengthen logical thinking, but gold decoration is easy to cause instability. Therefore, it is best to avoid using gold furniture in bedrooms and activity places.

Green: It is good for digestion, promotes body balance, and can play a calming role, which is beneficial to people who are active or depressed. Natural green can overcome syncope, fatigue and negative emotions to some extent.

Blue: makes people feel elegant and quiet, can lower the pulse and adjust the balance in the body. Using blue in the dormitory can eliminate tension and help relieve symptoms such as headache, fever, syncope and insomnia.

Purple: It can inhibit the motor nerve, lymphatic system and heart system, maintain the balance of potassium in the body, and promote the feeling of quietness, love and care for others.

Indigo blue: it can regulate muscles, reduce or stop bleeding, affect vision, hearing and smell, and reduce the sensitivity of light body to pain. This color is not suitable for decoration, but if used on cloth, it can make people feel safe.