Coloration

Definition and stakes

Portrait of Robert Ridgway Robert Ridgway,  Birds of North and Middle America (1911)

“ Wing more than three times as long as exposed culmen, the outer- most primary longest. Tail about half as long as wing, emarginate, the rectrices very broad, with broadly rounded tip, the lateral ones strongly incurved; upper tail-coverts very large and broad. Coloration. — Pileum, back, and under parts of body velvety black; upper tail-coverts bright metallic bluish green; tail dark metallic green or greenish black ”
Source: Wikisource

Anne Knox Arthur,  An embroidery book (1920)

“ These six bright colours, when used in conjunction with black and white, with each other, or with their complementaries, will strengthen, intensify and enrich each other without altering their true value—when such vivid effects and sharp contrasts offend the taste of the worker, when they appear too crude, too conspicuous and too obtrusive—which they are apt to do—they may be harmonised quite simply, either by modifying the complementaries or by using a tint or a shade, that is, a lighter or a darker tone of the same colour. ”
Source: Gutenberg

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