What color light should a kayak use in visibility?

A kayak should use a white light for visibility, as it is the standard color for navigation lights. This light should be positioned at the highest point of the kayak to maximize visibility from all directions. Additionally, red and green lights can be used to indicate the kayak's port and starboard sides, respectively, when operating at night or in low visibility conditions. These lights help ensure that other vessels can see and identify the kayak's position and direction.