I just found this website, about a group that is building a modern version of the NYCS. With modern locomotives painted in the two tone grey NYC. It’s pretty neat, they even have a complete history of it also.
A number of years ago I was planning that my layout would represent the Pere Marquette, if it had remained separate of the C&O into the 1960s and 1970s. I painted up a few pieces of equipment, but eventually followed the draw of going back to the steam era.
Here is one of the GP7s I painted for a 1970s version.
I don’t think that I have any photos of the GP30 or GP40 that I painted.