I have done some diggin and I think you are referring to Bagginsbill's Sketchbook thread where Satin Flame is mentioned as a color reference.  

http://www.renderosity.com/mod/forumpro/showthread.php?thread_id=2853901&page=4

Bagginsbill is the Guru on Material Room math and this thread covers his products for commercial release.  His methodology for creating these interesting shaders involve extensive mathematical derivations which is beyond the comprehension of most Poser users.  If you have a strong mathematical background, you can follow many of his formulations.  No image maps involved.

Since these products are for commercial release, there are no screencaps of their MatRoom setup.  You must purchase.  However, there are plenty of free scripts available both here and at RuntimeDNA forum available for examination and use.