Farrow & Ball Paint Colour Bone 15A soft and stony grey A soft grey with a touch of green, this stony neutral is simply named after the colour of bones found in the animal kingdom. Softer than Old White, Bone creates a timeless look suited to halls when combined with Lime White on woodwork. It can also be used to create a feeling of light and space when paired with lighter tones; or as a sympathetic neutral with our stronger, more traditional colours.