Blackstone Void 4 is the second-lightest of the five tones in the Blackstone Void ladder from Warhammer Colour Tone Pro. A light grey that is close to, but not quite, a bright white. It is handy for highlighting darker greys, for pale stone and bone-grey cloth, and for drybrushing a soft final lift across texture.
Step up to tone 5 for the sharpest top highlights, or drop to tone 3 when you want a gentler transition. Sold as a 12ml pot of acrylic paint, it follows the Tone Pro idea that a single paint can shade, highlight, glaze or drybrush. Shading Medium thins the pigment into a shade or glaze, and Blending Medium gives you more working time.