Darkness anchors Francisco Herrera; light is rationed, creating dramatic contrast rather than open air. Temperature reads distinctly warm: the reds and earth tones from Francisco Herrera carry the compositional weight. Muted throughout, the palette achieves its effects through value and temperature rather than chromatic force. At 26.9%, #100C0C functions less as a colour accent and more as a complete atmospheric environment. The saturated accent, #EDC580, registers at 2.3% - sparse enough to feel like a deliberate surprise. 68 units of value range underpin the palette's structural clarity: the eye always knows where light falls. This tonal restraint is characteristic of the Francisco Herrera approach: colour serves light, not the reverse. Palette 4 sits within the larger chromatic argument that Francisco Herrera's complete body of work advances.