appearances arid Cacti cactus clumps clusters coloring colors colouring colours danger display edge edges flora garden garden-display garden-plants irregular leaves light ornamental perennials plants pointed protection shape shapes succulents surface surfaces textures unusual Aarau Aargau ancient bike city color door europe house old romantic still life stilllife stone switzerland texture town wall angles background backgrounds blue sky contrast orange roofing roofing angles roofs rooftiles rooves sky. blue tiles abstract backdrop cement cemented construction decay design exterior flat grunge grungy interior paint painting panel peeled red white urban autumn-colours bright brown coloration colorful colour colourful decorative distinctive exotic fancy-foliage fancy-leaf floral flowers foliage growth multi-colored Multi-Coloured red russet shade showy-foliage shrub sunlight variations varied variegated variety wallpaper beginning bolders boulders cover covered creeper green greenery growing large mortar mound new-growth plant potential retaining-rocks rocks rocky rough small sprouting vegetation appearance bark contours cracks gnarled layered layers lines mottled pattern patterned patterns shadows shaped soft strips surfacing textured tree tree-trunk trunk uneven wood blended cloud cloud-formations clouds colored coloured conditions formations gray grey movement skies sky southern spread spreading sun thin various-cloud-formations weather white winter wintry