Values in Paul Grolleron rest in the mid-range - neither dramatically lit nor steeped in shadow. Temperature is cool-dominant, with blue and green families claiming the largest areas. Muted throughout, the palette achieves its effects through value and temperature rather than chromatic force. The saturated accent, #9B2E24, registers at 3.6% - sparse enough to feel like a deliberate surprise. At 51 units across the value scale, the palette keeps contrast readable without letting it dominate. The mid-to-high key, cool bias, and moderate chroma point to outdoor observation - sky and diffused daylight as the dominant light source. Paul Grolleron's palette 4 carries its own internal logic while remaining in conversation with the artist's broader colour intelligence.