Light floods Felicien Rops; the palette keeps values pale and airy across its range. 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. Only 6.0% is devoted to #443D2D, yet that small allocation delivers the palette's entire chromatic tension. Value range is moderate at 51 units - enough contrast for legibility, not so much as to fragment the tonal unity. Palette 4 sits within the larger chromatic argument that Felicien Rops's complete body of work advances.