“The Monochrome Passenger” is an artistic installation that provides a visual experience of chromatic variations in their basic form. It allows us to reflect on how we visually perceive the environment around us. The project is based on an artistic study of visual perception, analyzing the physical and biological processes of color vision and translating them into a purely visual language. This book contains all the research done during the process. The design is open spine and hard cover with letterpress printing.