I saw this and jokingly pressed v in-game, only to discover it ACTUALLY WORKS. Also, with this in mind, I went into the editor and pressed 4, and it actually made a statue, a purple one with no eyes or mouth, and sure enough it is immune to really, really undoes. My guess is that perhaps this was leftover content from when they planned to use the purple color, but then realized it wasn't needed, and that silver, gold, and ruby colors were enough.