Hatteras Off-White. Gallon. A modern one-part polyurethane topside and deck enamel improved by the addition of silicone for a brilliant shine and easy brush-ability. Its advanced ultraviolet filters enhance the superior gloss retention and durability of polyurethane. The result is a topside finish that’s exceptionally easy to apply, producing a lasting gelcoat-like brilliance with a minimum of effort. Formerly Easypoxy. Thinner: 120 Brushing Thinner or 121 Spray Thinner.