colour
Color is the visual effect of light through eyes, brain and our life experience. People's perception of color is not only determined by the physical properties of light, for example, people's perception of color is often affected by the surrounding colors. Sometimes people also refer to the physical characteristics of different colors produced by substances as colors directly.
Red visual impact is strong, making people feel active, warm, full of vigor and vitality. In people's minds, red is often associated with auspiciousness, good luck and celebration, so it naturally becomes a common color in festivals and celebrations. At the same time, red is easy to be associated with blood and artillery, with a sense of life and jumping, and with a dangerous and horrible smell of blood.
Fire extinguishers and fire engines are red. Extremely cool color, with the characteristics of flexibility and rationality, just corresponds to red. Blue easily makes people feel clear, detached and far away from the world. Dark blue makes people feel melancholy, emptiness, sentimentality, strangeness and loneliness.