canvas color color mix paint paper play rainbow texture water paint watercolor abstract appearance background colored colors colour coloured colours cream exterior external gray grey painted rough surface textured textures uneven wall wallpaper art backdrop colorful hue hues painting pastel pastels tone tones artwork blended decorative design details distinctive flame-like flaming green interconnected interlinked light linked links modern patterns perspectives purple shape shaped shapes style swirling thick thin undulating vibrant black city decay old old wall urban wall paint white paints papier series shades variation variations variety various watercolour rustic shade spatter watercolours