wavy psychedelic backgrounds. abstract ripple patterns for wed or print in hippie style. square icons for social

60s 70s abstract acrylic aqua art artwork backdrop background banner bright card collection color colorful concept cover creative curvy design drawing effect flat flow fluid flyer geometric graphic greeting groovy hippie illustration invitation layout liquid marble marbled marbling modern paint pattern poster presentation print psychedelic retro ripple set stripe style template texture trendy vector vintage wallpaper water wave wavy