I rode on the Super Chief twice in the '50s. I recall being very concerned because the four loco units were different colors - all warbonnet red, but different amounts of fading and dirt. I was only about 7 or 8 but it really bothered me at the time. It was a big adventure to travel in a sleeper, etc.
I have three Super Chief trains now, two Lionel and one MTH. Love them - they bring back memories