John Henderson occupies the comfortable middle of the value scale, avoiding both extremes to hold the eye in a sustained middle grey. Temperature is cool-dominant, with blue and green families claiming the largest areas. Every colour is desaturated; the palette proceeds through near-neutrals and gently-coloured greys. The most saturated colour, #AB834D, is reserved to 4.4% of the surface, where it acts as a focal punctuation. At 49 units across the value scale, the palette keeps contrast readable without letting it dominate. High luminosity and cool temperature suggest the plein-air condition: unfiltered daylight and open sky. This is palette 1 of John Henderson's sequence - a single chapter in a chromatic story told across many works.