Retro neon sign style typographic design, the single word **"Boo"** rendered as a glowing ghost-green neon tube letterform with a hand-lettered casual bounce, thick rounded strokes that mimic bent glass tubing, an inner bright mint-white hot glow core fading outward into electric lime green, subtle neon flicker warmth at the letter joints, the word seated slightly off-center with a mischievous upward tilt, flanked by two small matching neon-style ghost silhouettes — simple round-headed floaty ghosts with tiny dot eyes and wispy tails rendered in the same glowing tube treatment, one peeking from behind the B and one trailing the final o with a playful curl, all three elements unified by a soft outer halo glow that halos only the subject shapes, clean vector paths with smooth curves and crisp neon tube cross-section shading, flat graphic illustration with no photorealism, bold legible typography as the focal hero, palette of electric lime green, mint white, and ghostly pale yellow-white glow accents, print finish of smooth crisp screen-print flats with clean ink edges and no distress, isolated on a single flat solid deep charcoal black background with no gradients, textures, or effects on the background plane

Retro neon sign style typographic design, the single word **"Boo"** rendered as a glowing ghost-green neon tube letterform with a hand-lettered casual bounce, thick rounded strokes that mimic bent glass tubing, an inner bright mint-white hot glow core fading outward into electric lime green, subtle neon flicker warmth at the letter joints, the word seated slightly off-center with a mischievous upward tilt, flanked by two small matching neon-style ghost silhouettes — simple round-headed floaty ghosts with tiny dot eyes and wispy tails rendered in the same glowing tube treatment, one peeking from behind the B and one trailing the final o with a playful curl, all three elements unified by a soft outer halo glow that halos only the subject shapes, clean vector paths with smooth curves and crisp neon tube cross-section shading, flat graphic illustration with no photorealism, bold legible typography as the focal hero, palette of electric lime green, mint white, and ghostly pale yellow-white glow accents, print finish of smooth crisp screen-print flats with clean ink edges and no distress, isolated on a single flat solid deep charcoal black background with no gradients, textures, or effects on the background plane | PODspy AI Design