Don't know 100% for sure, but it looks like standard translucent acrylic, with some fine glitter added after the liquid acrylic has been placed on the faceplate mould, and then carefully swirled around, so as to not spread the glitter evenly throughout the entire faceplate. I suppose it's possible some lighter translucent blue acrylic may have been stirred in, too, to increase the variation between different areas... Interested to hear others' interpretations, too. .
3/4/15 at 4:17pm