3-D appearance blue bubbles clean cleanliness color coloration colored colors colour coloured colours communicating communication expressing expression eye-catching hand-wash hand-washing hands health hygiene hygienic indication information informative informing notification notifying plastic raised semi-transparent sign signs soap suds surface surfaces surfacing symbols texture textured textures thick thin washing washing-hands words advice alert announcement antennae appropriate-behavior appropriate-behaviour avoid be-careful bees beware brown buzzing care caution community concern danger dangerous furry hairy hive honey-bees insects movement on-guard pollinators protective risk risks risky safety soldier-bees striped swarm swarming transparent warning warning-sign wings area attention banned cigarettes direction directive distinctive environment glassy health-risk lettering location no-smoking not-allowed not-permitted permission-denied pollution prohibited prohibition style surfaced symbol tactile unhealthy wording angled angles botanical-gardens clouds columnless-glasshouse conservatories conservatory conservatory-complex construction controlled- temperature curved curves curving dome domes energy-efficient flower-dome foliage garden gardens glass glasshouse greenhouse heating high-tech horticultural horticulture hothouse indoor-gardens light lighting optimized-conditions overcast palm-trees palms plants shrubbery shrubs Singapore steel structure sustainable-building-technologies trees ventilation visibility warm-growing-environment windows all-weather-space atmospheric-humidity cloud-forest cooling regulated-climatic-conditions abstract art artistic arty back backdrop background backgrounds beautiful blend bright childlike colorful decoration design desktop dez pain digital fantasy futuristic glossy graphic graphics idea illustration isolated layers lines magic magical mix modern motion pattern play poster rainbow red retro science fiction shape shapes shiny space swirl swirls tech trendy vector vibrant wallpaper web white xymonau fractured pop art render rendering cool-moist flowers high mountain tall tallest unique water waterfalls