Its going to be printed on a Raptor. It's an extremely detailed printer. Obviously, you know from seeing the machines, its extremely expensive to repeatedly use a 3d printer.
After that, I'm going to cast rubber molds. They get aproximately 25 castings from that. I am trying my hardest to produce it as inexpensively as possible.
As for the color of the parts, they will most likely be urethane castings, so whiteish grey. Then each part will be painted accordinang to the order. I have over 5 years experience in the field of rapid prototyping and model making, so I am trying to produce the best piece I can, with the least amount of cost to you, the buyer.
I'm starting with one item to judge the direction this is going to take, and then go from there. If I really wanted to, I could make a completely realistic train with a metal frame, foam restraints, ect. But who really wants to spend thousands of dollars on that, lol.