colorful pop pattern round triangle and square stock backgrounds, art, multi colored, party - social event, circle

backgrounds illustrations pop art multi colored party social event circle triangle shape vibrant color 1990 1999 vector design square cute kawaii striped computer graphic composition abstract pink sparse bright geometry geometric decoration funky retro style elegance yellow light blue paper element modern 1980 1989 carefree changing form cheerful concepts creativity horizontal molding people painted poster textile youth culture