The lighting on your pix show why it is hard to get a good match for Rio Grande units by looking at photos from books, as I have tried to do. Lighting really affects how "Grande Gold" looks. Seems you did a pretty good job. I did the same thing with the Atlas F9 and a Lionel Legacy F7B, but I painted both, so didn't have to try to match. Tamiya x6 is a pretty close match to their 1-stripe paint scheme. The Microscale decals I used came with the curved roof stripe.
Terry