Ok - the under suit. I have been discussing it with with my good Cylon friends nashslash and Mardikrewe... and I've gone on a fabric scounting trip and didn't have much luck.

Here is my sample from nashslash... next to a light gray vinyl for patches maybe?? No. Too light.

Here is my sample from nashslash... next to a darker gray vinyl for patches maybe?? It is okay I think.
I've noticed that Centurions also seem to have to different colors for patches - arms are gun metal gray - legs are black???

Here is my sample from nashslash... next to a the only fabric I could find in the store that was close to the color of the plum. This fabric is not lycra and it has a slight shine to it. It is a tad too purple, but close. The lady helping me said that lcyra is more for dance/and swimware... so that is why stores mostly stock bright colors like yellow, pink, sky blue, etc. in lycra.
Now, the store DID have black in fabric, and in vinyl. I think I will make my entire under suit out of balk. Fabric, ribbings, patches - everything. Some day when maybe I can find the right color stuff, I'll make a second and better suit - after learning on the first all back suit.
That is... unless any Cylons out there have a fabric source they can share with the other Centurions looking for the right fabrics. 