I'm doing a painting of Skinners Falls Pool in Autumn. Couldn't get all the yellow greens that I wanted. Geneva Black to the rescue!
Most of the colors I was looking for are in the grid insert. The Split Compliment of Red Violet Mixed with Yellow. Each row is the colors at value mixed across.This is paint not digital. I started testing this with Ivory Black or should I say Blechh. Geneva Black gave more pure Green.
I usually make these grids on the computer just to give me direction.
Essentially this grid is a mix of re, blue and yellow with black of course the green side. Nice natural neutrals. There are a lot of these color accents in the image.