Color palette is an important part of a movie making process. Without a doubt, there are many non verbal elements that help a viewer to feel the mood of a movie, like costumes, scenery, soundtracks and others. For example, rainy weather enhances character’s sad mood, meanwhile, spring usually symbolizes a fresh start.
Color palettes, specially created for sets and costume designs, help to emphasize character’s personality, whether he\she is romantic, depressive, nostalgic, positive e etc. Harmony or contrast between costumes and scenery helps to pass on the idea of how character feels.
As an example, I’ve prepared a list with some beautiful movies, which prove am importance of color palette.