abstract arts backdrop background colors colour colours crafts paint painting paints pastel pastels pattern plaid rough scrapbook strip stripes texture blend brush color colorful element graphic mark spectrum stroke swash canvas grunge grungy hues shades spatter spatters splatter splatters tones variations art collage craft ragged rust rustic rusty curves distortion experimental wave waves balance blue concept fill frames green modern orange pink purple rainbow rectangles red windows bubbles mauve yellow beige brown burst decay depth lines render sepia vector