MuchAlohaNui
Senior Retro Guru
Original stickers are neon'ish green/yellow...so maybe just a few small accents in the same color here and there? Nothing too over the top, like grips or maybe some repro XTR brake hoods on the handlebars. There are tons of sellers on eBay selling anodized aluminum bolts in m4, m5, m6... is virtually any color you desire at any length. Neon green/yellow toe pedal clips and straps. Original Marin water bottle cages. IIRC, they even put out an accessory pack called "neon" something or other which comprised of bars, seat post, bottle cages and a few other bits.