Blue Gray isn\'t quite as simple as its name suggests, appearing more blue, grey, or even green depending on the light. A small amount of black pigment gives it a relaxed, almost weathered feel. Try it as a less intense version of French Gray.Exterior Eggshell brings long-lasting colour to outdoor spaces with a finish that remains flexible once dry, protecting wood and metal surfaces through changing weather. Added preservatives help to prevent the growth of algae and fungi, and the resin-rich formula resists flaking, peeling, and fading for up to six years. Providing it has been applied in accordance with Farrow & Ball Product Advice Sheets. Not suitable for use on exterior plastic surfaces or decking.