Yes! This is one of our favourite types of prints to do because we love the subtle result. Tone-on-tone printing is a very subtle method of printing.
The term refers to printing a colour on top of the same or very similar colour garment (i.e. the same "tone"). It could be black on black or any colour printed on top of the same colour. The difference of material between the shirt and the slight sheen from the print allows for just enough differentiation to see your design.