Glad you think so, Tamer!
I have a very ... interesting resin-casting experiment on my workbench right now. I picked up some "Aztec Gold" powdered pigments. The label indicated they were suitable for including in "any viscous ... medium such as paint, varnish, glue or paste" to get a metallic or pearlescent finish. I mixed some into the Part A of my Alumilite Amazing Casting Resin, just like I would any other colorant, and then added the Part B, stirred, and poured into my IG-88 head-mold. They are curing right now, but it seems to be turning out quite well...
Jacquard "Pearl Ex" Powdered Pigments - "Aztec Gold" is what I picked up and am trying. They have several metallic colors and if this run works well, I'll be adding them to my repertoire as well.