According to Korda you should get a green one
The BASIX Distance Sticks have designed to allow you to ‘clip-up’ at the required distance aseasily and accurately as possible, ensuring that you can recast to the same spot repeatedlywith your fishing rods and spod. Keeping a record of your spots will also mean that you areable to fish them again on future sessions, should you find ones that are productive.BASIX Distance Sticks have a stainless-steel point to allow them to easily be pushed orscrewed into the ground, and includes a green cord of exactly 12ft in length so that they caneasily be set the same distance apart each time. A T-bar is supplied to ensure they go into almost any ground with ease.