Boat Paint allows players to customize the look of their galleon by coloring it. It may be purchased in Sea Market from the Boat Painter NPC and is a single-use item. It (currently) comes in 8 varieties at a cost of 6,256 gold pieces each. Each paint weighes 10 stones and are not stackable.
To use Boat Paint, double-click it and target the main mast of the galleon. The Boat Paint will be consumed in the process. Additional coats of Boat Paint may be applied to continue darkening it, up to four coats.
To remove an unwanted color, use Boat Paint Remover which is also available from the Boat Painter NPC.
Boat paint remains on the ship for 2 weeks. After this time, the paint will fade to a lighter shade.