Sakura Moonlight Dawn 06 Gelly Roll Pens. The creamy, smooth, opaque ink comes in bright, vivid colours that are luminous on white or black paper. Works like a paint pen on coloured papers, vellum, and photographs. No feathering or bleed-through on most papers and no smearing once dry. Colours glow under a black light (UL light) Fine point, 0.3mm line with 0.6mm ball