appearance color colors colour colours concrete-platforms contrast contrasting cool cooling dark display fountain fountains froth light patterns platforms reflecting reflection reflections regularity Rhythm ripples rippling shade shadows shooting sparkling splash splashing spouting spray spraying squirting streaming turbulence turbulent water water-feature wet background carpenter concrete material concrete pattern concrete surface concrete texture construction metal nails nails nails on floor nails on slab platform scaffolding shadow wood deck wood grain wooden wooden deck