Color grading is an important process post-production to establish an overall mood or aesthetic for the film. A film colorist is the technician responsible for designing a film's color scheme.

Different hues elicit certain responses from the audience. For example, a film colorist may decide to use the darker shades of blue to create a feeling of sadness. As another example, a film colorist may use a pale green hue to create an overall tone for flashback sequences.

“So why is color grading important? Color can affect a mood or feeling. It can set a tone or time of day. It can determine the way a shot is interpreted.” --Dave Perry

Before & After Color Grading