PWC, Extra Fine Water Color PWC, Extra Fine Artists' Water Color, is crafted with the highest quality pigments and the finest high-grade gum arabic. To enhance the clarity and depth of color, single-pigments have been used whenever possible. The usage of mixed pigments has been limited. Using single pigments, watercolors are less prone to fading and the consistency of colors are improved. PWC offers exceptional clarity and transparency that artists desire, along with superior lightfastness to resist fading. PWC is ideal for spread techniques and color overlapping, bringing out the best in watercolor paper. The color palette offers a total of 104 colors that are transparent and subtle, yet intense and vibrant, allowing for an even greater freedom of expression.