Marguerite Lumière (1874-1963), niece of cinema pioneers Auguste and Louis Lumière, was a French artist and painter who played a crucial role in the aesthetic development of early cinema. Her career is inextricably linked to film coloring. Beginning in 1897, she was appointed director of the Lumière company's coloring workshop, where she supervised a team of about two hundred female workers. Under her direction, film frames were hand-colored using the meticulous pochoir (stencil) technique, a process that required great artistic precision. Among the most famous works she colored are "Danse Serpentine" and numerous scenes of daily life, which thus gained an unprecedented visual vibrancy. Although she received no formal awards, her contribution is now universally recognized by historians as fundamental for introducing color to cinema, enriching the viewer's experience, and influencing the evolution of the visual language of the seventh art.