I met the guy that owns the company and like the people already mentioned they're repainted upfe's / armn's. He said their fleet only had 45 cars (I think that was the number although my memory could be wrong, it just sounded so small when I heard and remembered it)
He also said they're working on buying tropicanas and the older Pacific Fe's that are flat 75 footers. This isn't the only train they have, they have french fry cars too which don't get painted like that. It was a weird experience meeting the guy because he walked up to me to pet my dog and I noticed the logo on his jacket.
he did say there's a lot more to come :)