Pharaoh cuttlefish they can show a mottled white and brown color, with a center circle of brown. The mechanism for color is the same in the Pharaoh cuttlefish as it is in other cuttlefish. This colour-changing function is produced by groups of red, yellow, brown, and black pigmented chromatophores above a layer of reflective blue and green tinted iridophores and leucophores, with up to 200 of these specialized pigment cells per square millimeter. These sacs of color are controlled by rings of muscle around the sac. The cuttlefish expands and contracts these muscle rings in order to show different colors. It is
Green Dot (symbol) obvious links with the Chinese Taijitu (yin and yang) symbol and Gary Anderson's recycling symbol. Where full-color printing is available, its official form is printed in a light and a dark shade of green (Pantone 366C and 343C). For cost reasons or to avoid a visual clash with other symbols, many manufacturers chose a black-and-white or other color combination on their packages. The Green Dot logo merely indicates that a company has joined the Green Dot scheme, and "not" necessarily that the package is fully recyclable. The logo is often confused with the recycling logo. In Malta, Green Dot Malta