Liquitex Professional Acrylic Ink made with finely ground artist quality pigments instead of colorants. They dry quickly, are permanent, water resistant and non-clogging, which makes them ideal for a variety of techniques from watercolour effects to stamping. Colour Name - Phthalocyanine Green Yellow Shade - A brilliant transparent green single pigment color with a yellow undertone. It's made from the modern synthetic pigment phthalocyanine which was introduced in the 1930s and has a high tinting strength.