retro doodle art, colorful retro doodle background with peace signs, flowers, and groovy s in rainbow colors

art color doodle retro background peace signs flowers groovy elements rainbow vibrant colorful psychedelic vintage hippie design pattern abstract artistic fun playful whimsical cheerful funky nostalgia unique creative handdrawn happy freespirited bohemian geometric shapes swirls decorative illustration pop style drawing sketch cool trendy fashionable grooviness ai generated