Nematode Body Structure. The phrase tube-within-a-tube is a convenient way to think of nematode body structure, and also a term used to refer to a major trend in the evolution of triploblastic metazoa (Brusca and Brusca, 1990 Invertebrates).
Neutrals and Universal Colors. Let me explain in details... In general, neutrals include black, white, gray (mix black with white and you've got gray) and different shades of brown. Nowadays a color can be called a neutral based on how effectively it can blend in with other colors. Basically, they match with all colors and color combinations - and don't create much of an emotion.
Charcoal gray may be a neutral, but it's also a statement. It's bolder than its lighter brethren; more modern than its neutral cousins, the beiges; and less dramatic than black.ress it up, dress it down â it's my go-to color.. True gray (or achromatic gray) is a mixture of black and white. It has equal values of red, green and blue (RGB), and thus no hue. Off-grays â what we most often use in decorating â have very subtle but important differences in the values of red, green and blue.