Willard Metcalf is strongly light-biased - shadow is suggested rather than declared. Willard Metcalf tilts toward cool - blues and silver-greys carry the structural weight. Colours are neither washed out nor blazing; they occupy the productive middle ground of the chroma scale. The most saturated colour, #BF5937, is reserved to 5.0% of the surface, where it acts as a focal punctuation. A value spread of 55 units gives the palette both depth and air - shadows are genuinely dark, lights genuinely light. The mid-to-high key, cool bias, and moderate chroma point to outdoor observation - sky and diffused daylight as the dominant light source. In the context of Willard Metcalf's full range of palettes, group 5 represents one movement in an ongoing chromatic dialogue.