Miss Mustard Seed Milk Paint Grain Sack is a soft natural gray. Named for the color of antique European grain sacks. It’s a chameleon color which sometimes looks white and sometimes looks gray depending on what is around it.A sample of Milk Paint will cover approx. 10 square feet, a quart will cover approx. One quart of milk paint covers approximately 70 sq. feet. Simply mix this powder with water- it’s that easy! A Milk Paint finish is unique and can range from a solid color to a stain, it all depends on how much water you add! It can be used on any porous surface without a primer. It will never chip or peel on porous surfaces as it soaks in and binds with the substrate. If your item your painting is not porous you will need bonding agent to not have chips or cracks. However, that's why we use it! We are in love with the chippy vintage look!