Mid-key values give Thomas Hill its characteristic quietness - nothing blazes, nothing disappears. Thomas Hill builds on cool foundations: the palette favours the blue-cyan-green arc. Chroma is kept low across all colours, producing the soft, enveloping quality that characterises tonal painting. Only 7.7% is devoted to #C9A157, yet that small allocation delivers the palette's entire chromatic tension. From deepest dark to palest light, the palette traverses 67 units of the value scale - a span that creates natural depth. The mid-to-high key, cool bias, and moderate chroma point to outdoor observation - sky and diffused daylight as the dominant light source. This is palette 4 of Thomas Hill's sequence - a single chapter in a chromatic story told across many works.