Although Color Strokes are considered an underglaze color, it is actually a type of glaze. It is frit based but matt in finish unless glazed over. This means that lids can not be fired in place if the color is where the rims touch. While there are special techniques, the main purpose is to add color to bisque or greenware by applying a pattern, brushstrokes, three brushed coats for opaque coverage or flooding color for pattern base coats. Cover with Transparent or Clear Glaze by brushing or dipping and fire to cone 05-06.