Hello,
when i look for some addings to my GoT i found things for money (more or less) and thought: Oh, this could be for free.
So i want to share it with you.
Where you can plunge the ball, there is a plate and this plate is black.
Nicer is this one i made (in my opinion).
Inspired by items for money like the Congo Decal...
It is not high professional but better than nothing.... you only have to find the position of the hole.