This is a little side project I've been working on, it's free for anyone to use with credit given:
This is as close as possible to 100% accurate and is ideal for any recreation. You'll need to set the colors correctly for them to work right, they're the same colors used in the texture:
Magenta (Red 199, Green 40, Blue 171): Rails, Cross Ties, Car, Bogie, Chassis
Yellow (Red 248, Green 203, Blue 0): Main Spine, Harness, Handrails, Catwalks
Blue (Red 4, Green 96, Blue 215): Seat, Supports
Set up everything right, and this is what you'll get:
Despite appearances, these were not easy textures to make. The magenta highlights had to be pixel-perfect to look right and not spill over into other parts of the texture, and the only way to do this was trial and error, constantly going back and forth between Photoshop and NL2. The ONLY inaccuracies are the lack of car numbers and the color of the part the restraint poles connect to. They're supposed to be blue, but they use the car color which must be magenta as the seat frames use it as well.