Experience the wide colour spectrum of PWC. Check out each colour series, colour number, lightfastness, transparency, staining, and granulation information on our PWC Colour Chart. Swatch 104 paint dots in graded washes to examine the characteristics of each colour.PWC Extra Fine Watercolour is produced using pigments of the highest quality from around the world to ensure superb levels of transparency and lightfastness for each extra fine colour.