appearance bloom blooming blooms buttercup-family colored colorful colors coloured colourful colours contrast contrasting dark display distinctive edges evergreen flora flower flowers foliage green Hellebore Hellebores Helleborus Lenten-rose low-growing perennials poisonous Ranunculaceae rhizome-rooted shrub shrubbery subtle-shades toxic toxicity white abstract background blended color colour decorative design details edged horizontal interconnected interlaced interlinked intertwined interwoven light linear lined lines patterns perspectives pink pointed points shape shaped shapes style surface surfaces texture textured textures thick thin wallpaper angles architectural architecture building contemporary elements exterior external geometric geometric-shapes height high high-rise modern patterned piped pipes sharp skyscrapers tubes tubular unusual views wall walls atmosphere atmospheric black cloud clouds darkening dramatic dusk evening glory gold golden lighting lights mood moody setting-sun shadows shining silhouette silhouettes skies sky spreading street-lights sun sunset trees backdrop border coloring colouring garden garden-background growth leafy leaves mature-leaves ornamental patio plants sheltered surfaced variations variety vegetation