art background curves design floral flourish flower graphics leaf nature plant spiral spring summer swirl tree vector autumn driving fall forest HDR leafs November Nyberg october road season street tarmac trees way black flowers hi-res illustration lillies sun wallpaper branch dry-rot fungal root Stump abstract architect architectural backdrop building construction decay gray lamp metal old pattern rural silver texture urban wall blue circle circular dot dots general point points red round rounded sign signs spot spots yellow plastic asphalt buildings cars crossing house houses housing lamps pavement rainpipe roadsigns town towns zebra bloom cutout grow inforescence isolated nice original petal petals pink flower stripe stripes white