a creative abstract swirling liquid rainbow of colours that looks like watercolour paints or inks

60s 70s abstract aqua background beautiful blend blue bright cmyk color colorful colour colourful colours creative design die dye fluid free green hippy ink inks light liquid looks love mix nostalgia nostalgic paint paints pastel pattern pigment prism purple radiant rainbow retro rgb saturated seventies sixties spectrum swirl swirling texture that tie vibrant vivid watercolour yellow