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
Christ Church School 12. Kindergarten students wear Persian coloured checked shorts, and a Persian blue shirt attached to the shorts, while girls wear Persian blue dress. Boys, up to the 7th grade, wear white shorts, white half-sleeved shirts, school belt, black shoes, and the school tie (which is dark bottle green with a thin yellow stripes running diagonally). The students usually pin a badge of their house name (and the house colour on the background) to their tie or their pockets. From the 8th grade onwards, boys wear full white trousers, a white half- sleeved shirt, the green and yellow striped school belt