retro 70s poster art featuring trippy lsd patterns and flower power motifs in shades of orange, yellow, green and pale blue.

70s retro poster art flower power lsd psychedelic trip patterns oranges yellows greens pale blue style background vintage groovy hippie child 60s colorful bright design pattern bohemian fashion counterculture pop abstract geometric funky color graphics decorative floral hippy peace vibe trippy culture revival inspired illustration generative ai