ok, that took much, much longer than i intended.  too much tweaking.  and i learned there's some aspect of my positioning script i don't quite understand.  but you can find the metallic lycra materials as freebies at ShareCG.  please let me know what you think, and if you find them useful.  they incorporate real reflections, so it's best to give them a real environment to reflect.  a simple room will suffice.