The value structure of James Alexander Walker is mid-key: quiet, controlled, and cohesive. Temperature is cool-dominant, with blue and green families claiming the largest areas. The absence of saturated colour is itself an expressive choice: this is a palette of restraint and atmosphere. The highest-chroma note - #D5C9A7 - appears at just 7.5%, deployed as a precision accent against the quieter ground. The full value range is 62 units: broad enough to build convincing three-dimensional form. High luminosity and cool temperature suggest the plein-air condition: unfiltered daylight and open sky. This is palette 4 of James Alexander Walker's sequence - a single chapter in a chromatic story told across many works.