Building chroma with layers.
Printing a few transparent layers of color over one another will give those color fields more depth than if printed in a single run. Two layers of the same color mix will produce a darker color.
Building Values and Form
Using just one ink mix, value can be created by over printing layers from different iterations of a block. Three different blocks were printed with the same color of transparent ink. The stacking of layers builds subtle value changes.
And Then For Color
Just as value can be developed with multiple color runs, color can also be developed and controlled by overlaying multiple color runs.