The Sherwin-Williams Co. now offers Sher-Wood Kem Aqua Plus Surfacer and Sher-Wood Kem Aqua Plus Color System. Sher-Wood Kem Aqua Plus Color System is a pigmented system featuring improved resistance to yellowing, fast build and hide in endless color options, the company says. Sher-Wood Kem Aqua Plus Surfacer offers improved filling properties and better hiding and sanding capabilities and also is available in a wide range of base colors.