I'd bet that (by incorporating references to different phases of the
godtime into the ritual) silver can be enchanted equally easily to
glow with several colors:
- Red for the red moon
- Blue for the blue moon (originally this was a cyan color, since
Anilla's death/disappearance it's midnight or a dark navy blue, close
to black)
- Green (or Yellow) for the other primary moon color
- White for the white moon, before being broken up into the three
primary color moons