Rich Ether Forest

Old French riche, wealthy, abundant — applied to color since the medieval period for hues that read as plentiful in pigment. Rich red, rich brown: the implication is depth combined with saturation, a color that gives the eye more to absorb. Sits at the saturated mid-light corner of the engine's grid, slightly warmer than bold and deeper than vivid.

Greek αἰθήρ, upper-air-or-quintessence. As a color modifier, ether implies a luminiferous-and-pure-upper-air quality, the visual register of Aristotelian-quintessence-and-luminiferous-ether hand-luminiferous-and-pure-upper-air Aristotelian-quintessence-and-luminiferous-and-Newtonian ether-and-luminiferous-and-pure-upper-air surfaces under Aristotelian-quintessence-and-luminiferous-and-Newtonian celestial-spheres-and-natural-philosophy upper-air-light. Sits at the modifier-and-cosmic end of the grid, parallel to plasma and nebula in usage.

The dense canopy of a temperate or tropical woodland — oak, beech, pine, eucalyptus, mahogany — wherever leaves close above to filter the light below. Forest green refers to the average reflectance of a healthy mid-summer canopy seen from below: a saturated, slightly muted green with the matte finish of layered chlorophyll. Deeper than fern, cooler than olive, with the ecological weight of a word that has named every wooded biome on Earth.