Just a quick question... is it possible that the color difference is a result of messing with lighting and color in photoshop?

All the issues on the markings and repro parts aside..... I have had a similiar color shift occur when I was "playing" with the lighting/brightness of some of my pictures over the years in photoshop. Because I don't have a fancy light set up, I have had to adjust the lighting and color balance so you can see the object or person I photographed. When you change the balance and saturation setting, you do get different color balances. After looking at a screen for a while, you lose perspective of what is "white, blue and red". (Its actually funny to have green or yellow children!)

The seller did admit to replacing parts, so that should knock down that $1,800 selling price SIGNIFICANTLY... I am just questioning if the color imbalance COULD be from bad photography and/or editing???...