Neutral Tint (PBk6, PV19, PB15) is a dark, almost black colour when unsaturated. This colour is excellent for darkening other colours without the need for a complementary colour. Used alone, Neutral tint is a wonderful tool for composing quick sketches.Payne’s Gray (PB29 PBk9 PY42) is a semi-transparent blue grey. Ideal for sky work, this colour is fantastic for creating wet weather clouds and stormy backdrops. Also a softer replacement for black when mixing colours.