A humorous or slang term for an exuberant, often garish mixture of bright, pastel, and metallic colors—especially rainbow hues, glitter, or confetti—used to describe designs, food, makeup, or decorations that are overwhelmingly colorful or kitschy.
2.
InternetEnglish-speaking countriesinformal
A decorative effect or product featuring a chaotic blend of rainbow colors and sparkles, intentionally whimsical or tacky in appearance.