Gelly Roll Moonlight Pens work like a paint pen with creamy smooth opaque ink that's perfect for writing in journals creating tip-ins and even journaling directly into your Bible pages. Moonlight colors are bright on white paper and produce outstanding effects on dark artwork or black paper. The ink dries quickly minimizing the risk of smearing. The fluorescent colors even glow under a black light! The archival colors contain pigment-based ink that is chemically stable waterproof and fade-resistant. Won't bleed through and Bible friendly.