bright multi-colored watercolor background of overflow of main colors of rainbow.

background color watercolour paint colour abstract paper watercolor texture colorful soft pattern wallpaper white vintage art design stain poster illustration retro painting artistic backdrop brush conceptual contemporary creative multicolored decor decoration summer decorative fluid graphic ink messy mixed multicolor shape sketch splattered stroke surface multicoloured multicolour bright beautiful multi-colored overflow main colors rainbow drawing emotions presentation scarf t-shirt print gentle cheerful palette