Dan Flavin created art from colored linear fluorescent bulbs. His works were not defined only by the materials he used, but by how they blended into their environment and connected to viewers through their luminosity. But how does one copy, preserve, and study works that exist in a dimension beyond 2D and 3D space, that change over time, and from installation to installation? This article explores the work of Dan Flavin, its impact on color perception, and how publishers and galleries sought to reproduce works of art that were impossible to reproduce.