background brown grunge India Kanangi Karkala karnataka pattern spots surface texture tile Western Ghats white wood texture door nails old wood plank planks rustic structur structure textures timber wood wooden crop Ears field grain grains green growing paddock stalks waves of wheat wheat backdrop city decay grungy old paint painted urban urban decay C4U ChIandra4U color colors design drawn illustration nature season soft spring vector wallpaper check diagram ecg electrocardiography health healthy heart hospital lines medicine results test vital