set of watercolor blue brush strokes, lines, stripes

abstract aquarelle artistic backdrop background backgrounds banner bar blue border brush brushstroke collection color design doodle drawing drawn edge element elements fusiform geometric gradient graphic hand handmade line lines long paint paintbrush rectangle ribbon rough set shape smear smears smudge spindle splash square stain stains streak streaks strip stripe stripes stroke strokes template text texture underlines uneven vector water watercolor watercolour