Pigment or dye applied directly to B&W film stock frame by frame — labour-intensive, unpredictable results. Archival technique now used for stylistic effect.
Before the technique of color film processes became standard practice, colorists worked directly on the celluloid strip with brushes, airbrushes, and dyes. Oil, watercolor, or gouache paints were applied frame by frame—a craft that required pure patience and a steady hand. The color had to be transparent enough to still allow the black-and-white light values underneath to show through, but it could not damage the film print. A scratch, an unevenness, and all the work was compromised.
Historically, this process dominated the 1900s to 1920s—at Pathé Frères, in early Méliès productions, wherever color was demanded and chemical processes were not available. The colorists were specialized artisans, often women, who worked in large studios under factory-like conditions. Each film print was unique; variations between prints were inevitable and accepted. This created a visual character that is no longer reproduced today—each frame appears alive, almost painted, because it was truly painted.
Today, this process is being revisited, not out of technical necessity, but out of artistic intent. Experimental filmmakers and VFX artists seeking a deliberately handcrafted, imperfectly organic look are using digital technologies to emulate the effect—or they resort to actual hand-coloring on real film material. The difference: it's no longer about completeness, but about accentuation. Color is applied selectively, used as a design element, not as a mandatory addition. A character's face receives red in the cheeks, while the background remains gray. This creates a density, an emotional presence, that flat digital coloring struggles to reproduce.
In VFX practice today, the term is often also used for digital hand-retouching on film material—matte painting or selective color grading, where the artist deliberately works imperfectly to preserve the impression of craftsmanship. The opposite is automated, pixel-perfect color correction, which aims for sterile perfection. Those who need authenticity or a specific visual character ask themselves: Should this look like a machine made it—or like someone created it with their hands?