The high-key values of Jock Macdonald give it an effulgent, almost bleached quality. Blues and teal-greys govern the palette, lending it an aquatic or atmospheric quality. Chroma is kept low across all colours, producing the soft, enveloping quality that characterises tonal painting. #B4C0AD claims 29.6% of the surface, functioning as the work's tonal foundation. The saturated accent, #B67B60, registers at 4.1% - sparse enough to feel like a deliberate surprise. At 61 units of value range, the palette has the tonal breadth to sustain complex spatial readings. High luminosity and cool temperature suggest the plein-air condition: unfiltered daylight and open sky. Palette 4 sits within the larger chromatic argument that Jock Macdonald's complete body of work advances.