Color, this film argues, does not exist without light: strip away illumination and the vivid world goes flat. Made in the 1960s, it traces how manufacturers and designers of that decade put that physical fact to work, using light and pigment to sell household appliances, packaging, and advertising in an era when color itself was still a selling point. Historical footage and demonstrations walk through the basics of the visible spectrum and how the eye reads it, then follow that science into the design studios and factories turning it into consumer goods. The film treats color less as decoration than as a technology, something scientists and engineers had to understand before it could show up on a television cabinet or a cereal box. It is a period piece as much as a science film, useful for what it shows about how mid-century industry thought about light as a design tool.