old-school funky rainbow colored striped poster set. collection of geometric rainbow tracks inspired by hippie era

rainbow poster abstract set groovy retro colours collection stripes bundle lines bold vintage 70s vector template funky background colorful modern illustration decoration shape banner design 60s motivational happiness flyer minimalism geometry adjustable positive print wave striped wallpaper element old simple 1970s card placard y2k pride iridescent geometric path 1960s 80s