Another experiment mixing white and black with my pigments. The yellow I used was almost earth tone in hue. The first red color laid down was opera rose, which I glazed with Sennelier red, a very saturated, transparent color. Some of the bright rose color shows through a bit. I darkened the leading edges of the yellow arcs with charcoal. The blue and red arrow at the left balances the blue patch at the lower right of the composition.