Metaphor
Sadness is the color blue because it is cold and dark. I think this because of the way sadness is portrayed in a person's emotions. When a person is sad they are often down and can't get back up. There are many different reasons a person may be sad. They could be grieving or have depression. The color blue represents many different things. To some people, blue represents the sky and the high heavens above, but when I think of the color blue I think of a dark time. It is common for people to decorate their house with blue because some people think that the color blue represents peace and tranquility. If someone is down they it is common to say 'why are you so blue?' That is why I think that blue represents sadness. This is not just my theory. Many studies show that the color of sadness is blue. Especially Psychologist that study these types of theories.