James Jebusa Shannon occupies the comfortable middle of the value scale, avoiding both extremes to hold the eye in a sustained middle grey. Cool tones set the register here - the blues and greens easily outweigh any warm accents. Chroma is moderate: colours carry enough saturation to be read as colour, but the palette stops well short of garish intensity. The saturated accent, #4A2C0C, registers at 8.1% - sparse enough to feel like a deliberate surprise. Spanning 51 units on the value axis, the palette achieves the balance between tonal flatness and fragmentation. High luminosity and cool temperature suggest the plein-air condition: unfiltered daylight and open sky. This is palette 4 of James Jebusa Shannon's sequence - a single chapter in a chromatic story told across many works.