Although almost all dartboards follow the same pattern of black, white, red, and green, there is no official rule saying they have to be those colors, only that the 20 must be at the top and darker than the areas on either side.What's important from a playing point of view is clarity. On some boards, the white areas can seem a bit dull, which makes it harder to concentrate on your target. We recommend boards where the divisions are nice and clear.