The value structure of Francesco Paolo Michetti is mid-key: quiet, controlled, and cohesive. A distinctly cool atmosphere runs through this palette: sky, water, and mist given colour form. Every colour is desaturated; the palette proceeds through near-neutrals and gently-coloured greys. The most saturated colour, #5C5818, is reserved to 8.8% of the surface, where it acts as a focal punctuation. 70 units of value range underpin the palette's structural clarity: the eye always knows where light falls. The mid-to-high key, cool bias, and moderate chroma point to outdoor observation - sky and diffused daylight as the dominant light source. Palette 4 sits within the larger chromatic argument that Francesco Paolo Michetti's complete body of work advances.