background color colour cool cooling edge foliage lake lakeside light lighting mirrored outdoors outside peaceful perspectives placid protection reflecting reflection reflections restful ripples rippling shade shadows shelter sunlight sunshine surface surfaces texture textures tranquil tranquility tranquillity trees vegetation water water's-edge wavelets appearances arid Cacti cactus clumps clusters coloring colors colouring colours display edges flora garden garden-display garden-plants irregular leaves ornamental perennials plants pointed shape shapes sharp short-spikes small-spines spikes spines spiny succulents unusual