monoChrono relates the basic units of time (hours, minutes and seconds) with the primary colors of light (red, green and blue). Any given point of time can be expressed as the sum of the specific values of the hours, minutes and seconds and represented by a monochrome colour.
As time evolves between sunset and sunrise, the color evolves between these two extremes. As the length of the night evolves in the course of a year and depends on the location on earth, consequently the color of a given point of time on a given day will depend on these contextual values. So the monochrome evolves in function of time and space.