SAKURA-Gelly Roll Moonlight 06 Pen Open Stock. The most vivid Moonlight colors are now available in a fine point to create eye- catching details. It works like a paint pen on colored papers, vellum and photographs. The fine line allows for the ink to dry with very little wait time, minimizing the risk of smearing. The creamy, smooth, opaque ink is perfect for writing in journals, decorating cards, pattern drawing or detailed accents. All colors are bright on white paper and produce outstanding effects on quality black paper. The fluorescents even glow under a black light source, popping the colors right off the paper. Moonlight ink comes in two types: archival and fluorescent. They are a pigment based ink.