John Duncan occupies the comfortable middle of the value scale, avoiding both extremes to hold the eye in a sustained middle grey. John Duncan tilts toward cool - blues and silver-greys carry the structural weight. All colours lean toward grey, building depth through value rather than colour punch. The most saturated colour, #523327, is reserved to 3.5% of the surface, where it acts as a focal punctuation. The palette spans 45 value units: a measured range that delivers coherence over drama. High luminosity and cool temperature suggest the plein-air condition: unfiltered daylight and open sky. In the context of John Duncan's full range of palettes, group 6 represents one movement in an ongoing chromatic dialogue.