I had a chance to tour a steamlined dining car under refurbishment at a car repair shop some years ago and everything seemed to be stainless steel, including the floor. However I was told that in actual service the stainless steel floors had a sort of wood slatted grillwork flooring so bits of food would not cause a tripping hazard, and the flooring was easily picked up for cleaning to avoid odors and rot. It was also probably easier on the legs and back to stand for long periods on a wood floor than on a steel one.
Dave Nelson
This album:
https://www.flickr.com/photos/33672589@N08/albums/72157629778818412
Has some useful photos of a Milwaukee Road diner-lounge kitchen.
https://www.flickr.com/photos/33672589@N08/albums/72157642103492313
I usually airbrush an aluminum color but if you are using rattle cans, Rustoleum has what I consider a nice, muted color called matte nickel:
https://www.homedepot.com/p/Rust-Oleum-Stops-Rust-11-oz-Metallic-Matte-Nickel-Protective-Spray-Paint-7277830/100152057
I find this color to be useful for many model RR projects such as signal relay boxes or as a base coat for galvanized sheeting.
I used the matte nickel to paint this Superliner kitchen, which is completely hidden in the car since there are NO windows on the lower-level but at least I sleep better knowing my kitchen is silver and not bare, beige plastic
Good Luck, Ed
Here's such a train...
...and a couple views of the galley/kitchen...
I thought that I had more pictures, but can't seem to locate them.
Wayne
Got yet another one for my Forum friends. Would silver/aluminum be correct for painting the kichen part of a streamlined diner car? I'm building my own interiors for my passenger cars and am needing to paint them. Thank you as usual for any assistance that can be provided.