advertising backdrop background blended bright center centre color colour communicating communication design detailed details image inform information informing invitation lettering letters light lines medical medical-care medical-services opportune opportunity patients potential promotion promotional services sign style surface surgery texture textures variety various vibrancy vibrant words advice alert announcement appropriate-behavior appropriate-behaviour be-careful beware black care careful cars caution lookout potential-vehicle-damage risk risks road road-surface safety signs slow-down speed speed-bump speed-hump vehicles warning warning-sign watch watch-out yellow avoid below-ground concern danger dangerous digging digging-dangers flammable gas gaseous natural-gas no-ignition pipeline pipes red risky stay-clear vapour vapours warned white 3-D distinctive gold golden coloration colored coloured contrast decorative designed for-sale glass glassy metallic patterned patterns perspectives plastic presentation promoting purchasable raised sale semi-transparent shaped shapes shiny suggestive surfaced surfaces surfacing tactile textured thick thin angled angles dental eye-catching health italics location red-lettering wallpaper welcome wording brisling bristling calcium can canned clupeidae edible European-sprats fatty-acids fish food healthy heart-healthy herring-family herring-like marine-fish nonperishable nutrient-rich nutrients nutritious oil oily-fish omega-3 packed polyunsaturated portable self-contained-food skipper small smoked sprats sprattus-sprattus tightly-packed tin tinned tins vitamins