Narcisse-Virgilio Diaz is low-key throughout, a quality associated with Tenebrous Weld - deep shadows dominate the composition. Temperature is cool-dominant, with blue and green families claiming the largest areas. Every colour is desaturated; the palette proceeds through near-neutrals and gently-coloured greys. The saturated accent, #4C3C0E, registers at 7.3% - sparse enough to feel like a deliberate surprise. The full value range is 55 units: broad enough to build convincing three-dimensional form. Together these qualities place Narcisse-Virgilio Diaz firmly in the tonal tradition - concerned with mood and atmosphere rather than chromatic display. This is palette 4 of Narcisse-Virgilio Diaz's sequence - a single chapter in a chromatic story told across many works.