The value structure of Jean-Joseph-Xavier Bidauld is mid-key: quiet, controlled, and cohesive. A distinctly cool atmosphere runs through this palette: sky, water, and mist given colour form. The absence of saturated colour is itself an expressive choice: this is a palette of restraint and atmosphere. The most saturated colour, #725F35, is reserved to 6.1% of the surface, where it acts as a focal punctuation. 53 units of value spread create a palette that is varied but unified - contrast in the service of harmony. The palette has the character of outdoor light: cool, mid-bright, with colour rendered faithfully rather than expressively. This is palette 4 of Jean-Joseph-Xavier Bidauld's sequence - a single chapter in a chromatic story told across many works.