Blue. YBA060/1. Gallon. Trilux 33 in combination with Biolux Slime Blocking Technology provides antifouling protection that is slow polishing and available in three bright colors, including white. Specifically formulated for use on aluminum boats, outdrives and outboards, and can also be applied to fiberglass, wood and other metals. Suitable water types: Sea water, fresh water and brackish water. Thinner: Special Thinner 216.