Be warned that the Highball set I got was missing some of the info. The measurements of the car on the right side were not in the set, so I had to get some from a Microscale set. I did let Highball know about that.
But the colors are about right. I used a pair of M-T cars, primed white and B&M Blue and Gulford Grey all from Pollyscale. I've seen three of the prototypes here in Bakersfield, so the pair I have look good roaming around the layout.
Kel