Gelly Roll Moonlight® has the brightest and most vivid colours of the Gelly Roll® family. The creamy, smooth, opaque ink is perfect for drawing, doodling and colouring. All colours are bright on white paper and produce outstanding effects on black paper, and the fluorescents will glow under a black light source. 1 X Pack of Gelly Roll Moonlight Pens, Set of 12 Pens Water Based Pigmented Gel Ink Spectacular Fluorescent Effect - All Colours Are Bright On White Paper But Moonlight really comes to life on black paper Special Effect With Blacklight! Fun For Writing, Drawing, Colouring & More