Mercurius Water Color Pencils. Exclusively manufactured for Mercurius - Water Color Pencils made in cooperation by Stockmar and Lyra. From energetic drawings to light watercolors, these artist's colored pencils can be used both for coloring and watercolor paintings. Using a moist brush, you can create exciting watercolor effects, making these watercolor pencils ideal for sketching and illustrations. When used for watercolor paintings, the color combinations are endless. The large triangular, rounded, wooden pencils have a painted color coating and a 6.5 mm, strong, long-lasting lead.