MAC Pigment Shade: Blue Brown (Brown with Blue Sparkle) Size: 0.15 oz / 4.5 g A highly concentrated loose colour powder that contains ingredients to help it adhere to skin. Create a subtle wash of colour or an intense effect. Easy to blend. MAC Pigment - Blue Brown (Brown with Blue Sparkle) - 0.15 oz / 4.5 g. A highly concentrated loose colour powder that contains ingredients to help it adhere to skin. Create a subtle wash of colour or an intense effect. Easy to blend.