The UNSEEN project aims to create new visual appearances by considering metasurfaces that don’t exist in nature, for example by exploiting the many degrees of freedom offered by disordered sets of resonant nanoparticles. The project could have spin-offs in many fields such as, for example, coatings for the fine and applied arts. This multidisciplinary project, which will begin in September 2023, requires bringing together skills in complex media, nanophotonics, computer-graphics, electromagnetic modeling and nanofabrication. Several postdoc and PhD positions are available.