appropriate behavior appropriate behaviour cigarettes direction environment health health risk no smoking no smoking sign not allowed not permitted penalties permission denied pollution prohibited prohibition sign unhealthy warning blue gray blue grey citrus citrus fruit danger dangerous deterioration discoloration food fruit fungi growth lemon mold moldy mottled mould mouldy off raised rotten rotting surface yellow alert appropriate-behavior appropriate-behaviour area communicating communication health-risk no-smoking not-allowed not-permitted permission-denied expectorate expectorating historic-sign no-spitting old railway-platform spit spitting bad blue-gray blue-grey discolor discolour growing orange skin texture baked bread carbohydrate cheese cheesy circle circular delicious diet dough doughy fishmonk healthy isolated italian Italy junk food one only pepper pizza plain quality round single staple taste tasty tomato tomatoes background blade clover daisy detail fescue fetch field flora grass grasses green ground grow herb herbage lawn meadow moss organic plant problem spring summer textural textured turf warm weed wild appreciated black red symbols thanks white black-&-white gray grey greyscale garden gardening