Giulio Cesare Procaccini dwells firmly in the shadows, with no more than a whisper of light. Heat pervades this palette; warm chromatic identities outweigh cool ones at almost every weight. Saturation is deliberately withheld - the beauty here lies in the near-monochromatic gradations rather than colour difference. The highest-chroma note - #2F1D13 - appears at just 10.3%, deployed as a precision accent against the quieter ground. A value spread of 59 units gives the palette both depth and air - shadows are genuinely dark, lights genuinely light. The combination of low values, muted chroma, and compressed range is the signature of the Tonalist mode - painting as atmosphere. In the context of Giulio Cesare Procaccini's full range of palettes, group 10 represents one movement in an ongoing chromatic dialogue.