Semi-Moist Underglaze 109Amaco's Semi Moist Underglazes Semi Moist Underglaze Set #108 Set #108 includes the Light Yellow, Maroon, Dark Blue, Blue Green, Dark Green, Light Brown, White, and Black colors of the Semi Moist Underglazes. The SMUG's are formulated to respond similarly to brushing with watercolors becoming more opaque with layered application and more transparent after water is added. They can be blended and diluted to achieve a wide variety of effects. These