Each watercolor pan is hand-poured. Hand pouring pans is incredibly labor-intensive and offers the purest form of professional watercolor half pans. It takes three to four pours over several months of drying to produce each half pan of DANIEL SMITH Watercolor. Our Indigo formula mixes Indanthrone Blue with Lamp Black for an extremely lightfast, intense dark that closely matches true Indigo. Transparent, yet high in tinting strength, this Indigo leaves a gentle faded blue denim stain when blotted from a damp state paint. Blueberries, blackberries, and plums are a few subjects to play with using this technique. Use Indigo wherever dusty purples are desired. Indigo evokes a feeling of atmospheric depth used for expressive, moody skies. Try flowing short strokes of Indigo into water, add touches of Sepia, and Quinacridone Burnt Orange to create branches and birch trees. For a special treat, try this with Indigo and Cote d'Azur Violet.