Daniel Smith Extra Fine Watercolor Sticks offer the same superior intensity as the Daniel Smith line of Extra Fine Watercolor paints with the convenience and portability of half pans. Each stick is packed with pure pigment and produces vibrant strong color when wet or use them dry to build texture. They’re highly reactive with water and release rich creamy colors. Phthalo Green Blue Shade is a black-green. Concentrated to diluted states it is a transparent and super staining green. Organic and absolutely lightfast. The slightly bluish shade can be readily modified with yellows and reds. Creates luminous effective darks or clean glazes.