Centerbeam cars on the CP-Rail

Model Railroader Prototype information for the modeler
1

[?]Hi, I´m Christian from Germany,
I want to know at which time or for what diferrence the centerbeam cars on the CP-Rail are paint in red,blue or green like walthers did it?
Thanks for answering!

2

Most of The CP Rail centerbeam flatcars I’ve seen have always been painted red. Then again I live in Western Pennsylvania which isn’t exactly the heart of CP Rail territory.