Is white thread allowed to divide rinks on an outdoor green?

In outdoor bowls, the use of green thread to mark the dividing lines between rinks is required because it ensures consistency with the natural color of the grass, maintaining the aesthetic of the playing surface. The rule prioritizes the clarity and uniformity of the game environment, which is vital for players to visually navigate the rinks without distraction.

Using any other color, such as white, can lead to confusion during play, as it may not blend seamlessly with the natural surroundings and could potentially affect player performance. Therefore, indicating that only green thread may be used aligns with the regulations set forth to promote fair play and maintain the integrity of the game. This rule stipulation is clear and intended to uphold high standards for competitive play.