Neon 90s vibes? Sure, they can pop, but only if the grid stays tight and the transitions feel alive, not just flashy. Keep the colors punchy but not overwhelming, and remember that users still want quick, clear navigation. Throw a few bold accents in, test them with real people, and if it feels like a retro remix that still loads fast, go for it. But if it starts to look like a museum exhibit, dial it back—design is less about the flash and more about the feel.