That is no experiment, it is a proven technique for contact prints made on a contact printer.
There was at one time (newer than your machine) a super-deluxe volume production contact printer that had a whole bank of small lights, each one with its separate on-off switch, the idea being that you could adjust the exposure across the LF negative to give dodging and burning effects. Say you needed more exposure in the sky, you would leave those lights on full, and say, possibly switch off every other light on the rest of the negative area. Of course the whole light source of many small bulbs was diffused thru an opal glass, upon which you could also lay dodging papers, as this was below the glass plate you put the negative on. Quite a machine.
:P Technically its an experiment for me if I am making sure I actually do it right
-Karl Blessing Karl Blessing.com The Bokeh
Color Film always existed. It's just the world was always black and white till recently.