Greene uses a diverse photographic practice to explore representations of race. In the most recent body of work, Undertone, the artist returned to the creation of ambrotypes, this time utilizing stained glass as support. The images are utterly transformed by the different colors of the glass itself, and vary according to the color they are set against. This series touches upon themes central in other works as well: the shifting, unstable nature of photography and how our understanding of color is completely dependent on its context, both literally and in terms of race. Greene is also currently working on a new body of work that uses African textiles as a material and pattern to explore her own relationship to culture.