Theodor van Thulen dwells firmly in the shadows, with no more than a whisper of light. A distinctly cool atmosphere runs through this palette: sky, water, and mist given colour form. Chroma hovers near zero; colour declares itself through subtle shifts in hue rather than outright saturation. #17140F claims 55.9% of the surface, functioning as the work's tonal foundation. The most saturated colour, #3F221B, is reserved to 3.8% of the surface, where it acts as a focal punctuation. Value range is moderate at 52 units - enough contrast for legibility, not so much as to fragment the tonal unity. The combination of low values, muted chroma, and compressed range is the signature of the Tonalist mode - painting as atmosphere. In the context of Theodor van Thulen's full range of palettes, group 4 represents one movement in an ongoing chromatic dialogue.