Healthful Inlaid Peacock

Old English hǣlth, health — adjectival suffix -ful. As a color modifier, healthful implies a clear-and-vital-and-wholesome quality where the hue carries the visual register of fresh-air-and-sunlight outdoor health-promoting environment. Sits at the crisp-and-wholesome end of the grid, parallel to salubrious and wholesome in usage.

Old French enlaissier, to-set-in. As a color modifier, inlaid implies a hand-set-and-decorative quality, the visual register of Florentine-and-Italian-Renaissance-pietra-dura hand-set-and-decorative inlaid-stone-and-wood-and-mother-of-pearl pietra-dura-and-marquetry surfaces under Florentine-and-Renaissance hand-inlaid pietra-dura-and-marquetry light. Sits at the modifier-and-texture end of the grid, parallel to carved and tooled in usage.

Pavo cristatus, the Indian peafowl whose male displays the most elaborate sexual ornament in birds — a fan of two-meter eyespotted tail feathers in iridescent blue-green. The color is structural, not pigmented: created by interference patterns in the feather barbules. Peacock blue refers to the dominant body color: a saturated, slightly muted teal-blue with the optical depth of structural color. Cooler than persian, warmer than sapphire.