Emile Louis Picault occupies the comfortable middle of the value scale, avoiding both extremes to hold the eye in a sustained middle grey. Warm and cool tones are held in careful balance - neither family dominates, creating tension and resolution simultaneously. Chroma is kept low across all colours, producing the soft, enveloping quality that characterises tonal painting. #C6C6C6 at 52.5% of the palette: an overwhelming presence that pulls all other colours into its gravitational field. #402216 delivers the chromatic peak at only 7.5% - a small shot of colour with outsized visual impact. At 65 units of value range, the palette has the tonal breadth to sustain complex spatial readings. This is palette 4 of Emile Louis Picault's sequence - a single chapter in a chromatic story told across many works.