abstract angled angles appearance background basic color colour concrete curved curves curving external footpath gray grey grooved grooves ground hard-surface hard-surfacing lined lines mottled mottling outdoors outside path pavement paving perspectives rough streaked streaks surface surfaced surfaces texture textured textures variations brushed corroded metal slab tarnished worn blue crater lake lake mountains sky snow volcano white Bordeauxdog dog pet winter cloud clouds cloudscape cumulus daylight sunny day rust rusty wall bright color daisy flower flowers macro spring stem petals