Quoted from Pesmerga:
Thanks for your answer Luddite, any suggestion on how to repair the sanctum zone without canceling the writings and without buying those wrong colored decals? How did you guiys repaired yours?
Repaint the whole section, with the grey (the whole shape, don't try to paint part or you will see a line. I provided a formula in an earlier post: https://pinside.com/pinball/forum/topic/the-shadow-club/page/39#post-2674488
Then make a waterslide of the type and lay it over the grey area. You will then want to clear, mylar and wax. Here is my completed Shadow, after the Sanctum area was fully repaired: