Samuel Morse is low-key throughout, a quality associated with Tenebrous Sienna - deep shadows dominate the composition. Samuel Morse orchestrates warmth above all else - reds, ambers, and siennas take the lead. Chroma is kept low across all colours, producing the soft, enveloping quality that characterises tonal painting. #C2A78A delivers the chromatic peak at only 1.9% - a small shot of colour with outsized visual impact. A value spread of 67 units gives the palette both depth and air - shadows are genuinely dark, lights genuinely light. Together these qualities place Samuel Morse firmly in the tonal tradition - concerned with mood and atmosphere rather than chromatic display. This is palette 5 of Samuel Morse's sequence - a single chapter in a chromatic story told across many works.