Like Rockspyder said I can do whatever side you like for the clip side, or both or none. With or with out lanyard hole is also a standard option. I haven't seen any G10 available that would be dark enough that I would call it charcoal gray. This is really the darkest I've seen.
http://masecraftsupply-com.3dcartstores.com/G10-Cool-Gray-18-x-5-x-12_p_2734.html Other than that black is about the best I can do.
Rockspyder - That material is called "fadeone" from beyondwoodproducts. It was a limited/special edition material and I'm not sure there will be any more, so I was pretty happy to get that piece. It's basically 12 of their resin colors all poured together and it's pretty neat. I believe I have enough to make one more set, though it will probably have to be a flat sided set because the left over pieces are pretty thin. Might be awhile before I get time to make the other one though.
Also, daylight shot: