abstract repeat of 3d colorful pallettes retro style rough texture square border background graphic

background 3d strips frame border repeat pallette dazzled square retro groovy vintage texture 70s hippy abstract funky fun seventies 60s color graphic wallpaper 1960s sixties design pop psychedelic backdrop style banner creative colorful vivid disco party printing decoration trendy bright 1970s vibrant multicolor grunge rough risograph template advertisement shadow