Hopefully this link will work. The thread will give you some idea of the process.
The tender is mostly styrene with a bit of brass for strength.
You will get lots of opinions on the 'correct colours'. Try and find colour photos or video and use them as your 'best guess'. I harken back to a pic of a B-17 fresh off the assembly line with three shades of Olive Drab, depending on whether it was a dope or paint or laquer.
Excellent. I like the way it looks like it was driven in off the street on to the show room floor, given a wax job but they forgot to Armor-All the tires! That to my mind is what sets off that profile shot. Beauty!