MNT, since no one else has touched this, I will try to answer. I bought what I believe is emerald illusion from a member here. While the base collor is I think a solid color, the clear coat is where the illusion comes in. The color of my chuck changes in different lighting. Sometimes it is green, sometimes red, or blue, or brown. All with sparkles? It looks by the pictures on Jeff's website like the amber has a reddish background color, but that could change depending on the light.
Hope this helps.
D