abstract black design graphic pattern rotate rotation spatter spin spinning spiral splat splatter twirl contamination danger green illustration logo pollution radiation radioactive shape sign symbol toxic warning eco ecology environment garbage nature recycle recycling ba1969 board cardboard corrugated grunge old paint paper speckle texture vintage backdrop background blown grungy ink mess messy spill stain stained construction decay drip dripping drips metal rust rusting splatters surface urban notebook notepad notes pad sketchpad spills tablet textures wire write