Values in Thomas Moran rest in the mid-range - neither dramatically lit nor steeped in shadow. Thomas Moran builds on cool foundations: the palette favours the blue-cyan-green arc. Chroma is kept low across all colours, producing the soft, enveloping quality that characterises tonal painting. The most saturated colour, #765538, is reserved to 6.6% of the surface, where it acts as a focal punctuation. 64 units of value range underpin the palette's structural clarity: the eye always knows where light falls. The mid-to-high key, cool bias, and moderate chroma point to outdoor observation - sky and diffused daylight as the dominant light source. In the context of Thomas Moran's full range of palettes, group 13 represents one movement in an ongoing chromatic dialogue.