The meaning of colour

Colour as the main thing of visual elements in the film and television, it is a kind of important ways to express stories.Many movies use colour to make different kinds of psychological effect. Some movies in a tone throughout, some movies are in a specific scene to use a specific colour. In a word, there are various ways use colour to lead the audience’s emotion through visual images in films.

As Patti Bellantoni mentioned, Red, it means powerful, lusty and defiant. Yellow means the promise and the warning, however, when it brightness and warmth, it is often associated with happiness. We can feel powerless pinafores and scary through blue, as well as it is the coldest colour in the spectrum. Green is a strange colour, we can see many types of green in our world, however, when it not in a natural state, it can have very negative associations. So in many films, green was often used to describe evil witch. (If it's purple, someone's gonna die : 2005)

Reference: Patti Bellantoni (2005). If it's purple, someone's gonna die. Burlington, MA, USA ; Oxford, UK : Elsevier/Focal Press 1st American pbk.