The value structure of Robert Julian Onderdonk is mid-key: quiet, controlled, and cohesive. Temperature is cool-dominant, with blue and green families claiming the largest areas. All colours lean toward grey, building depth through value rather than colour punch. The most saturated colour, #653E26, is reserved to 7.6% of the surface, where it acts as a focal punctuation. The value range spans 57 units across the palette, providing the full gamut from deep shadow to near-white and ensuring clear tonal hierarchy. High luminosity and cool temperature suggest the plein-air condition: unfiltered daylight and open sky. This is palette 8 of Robert Julian Onderdonk's sequence - a single chapter in a chromatic story told across many works.