abstract art artwork background blue clockwork cogs concept cooperation creation design drive energy engine engineering fill frame gear graphic image industrial industry machine machinery macro metallic motion network objects original power render steampunk steel structure style teamwork technology teeth texture unique warp wheel work alert appropriate-behavior appropriate-behaviour approval approved black care communication concern danger dangerous denied directions green inform information informing not-allowed not-permitted park permission-denied permitted prohibited prohibition prohibitions protect protection public-park red rules safety sign signs vehicle warning warning-sign white appearance blended bright christmas color colored colorful colour coloured colourful dark decorative details diagonal diagonals interconnected interlaced interlinked intertwined interwoven light multicolored multicoloured patterns perspectives shape shaped shapes square squared squares surface surfaces textured textures thick thin vibrant wallpaper curved curves geometric geometrical lines octagon octagonal octagons off-white transparent brown curled linear lined linked links liquid liquidy mosaic rolled rolls weave woven bush bushland calming colors colours cool country creek fencing flow flowing foliage grass grasses greenery grounds moving peaceful plants reflecting reflections ripples rippling running rural shade shadows steady stones stream streaming sunlight sunshine tranquil trees uncultivated vegetation water wet architectural architecture barrier basic brick brick-wall bricks brickwork building cement exterior external firm mortar perspective rough smooth solid standard strength traditional-brick-wall variation varied various wall