abstract backdrop background colors colours cotton fiber fibers grunge grungy pastel pastels rough series stuff stuffing texture textures variation variations arts canvas colour crafts desktop paint painting paints paper pattern scrapbook wallpaper architecture bridge build cloud construction element erasmus holland landmark line modern Netherlands river Rotterdam sky steel suspension water aqua blue bubbles clean clear color condensation dew droplets drops glass light liquid macro nature spotted surface arena asphalt athletics begin block brown competitive contest cover curve determination distance endurance fast field fitness focus game city dark decay design gloomy iron metal old rust rusty scrap urban vintage