Élisabeth Thuillier and Marie-Berthe Thuillier were a mother-daughter team of French colourists. They ran a workshop in Paris, where their employees hand-coloured early films and photographic slides using their plans and colour choices. They are remembered especially for the work they did for the director Georges Méliès.

Film colorization is any process that adds color to black-and-white, sepia, or other monochrome moving-picture images. It may be done as a special effect, to "modernize" black-and-white films, or to restore color segregation. The first examples date from the early 20th century, but colorization has become common with the advent of digital image processing.