Any two nonempty indiscrete categories are equivalent to each other. The indiscrete topology is generated by the pretopology that has only isomorphisms for covering families. They can take the form of multicolored lights, colors, geometric shapes, indiscrete objects. Such spaces are commonly called indiscrete, anti-discrete, or codiscrete. Conversely, any function whose range is indiscrete is continuous. A sheaf on the indiscrete site is the same thing as a presheaf.