40000 rectangles.
There is much more potential here. The weight which is used as a parameter to combine colors, is just a number. Also, other pixels can be used for more than computing a normal and ray reflections. A pixel is just a set of numbers x, y coordinates, weight, and rgb colors. These numbers can be combine in infinite ways to distort or enhance an image.
That description is way too general. Applying random calculations to these numbers will just results in random noise. The potential is realized by breaking the rules, but only by a little bit at a time.
I am not going down that path now. This is going on my every increasing list of this to revisit someday.