I have always admired their colors. I finally got a train together over the past couple of years with a Weaver Atlantic and some Lionel 18" cars. I don't know much about the Milwaukee Road but have since learned even some of their heavyweight cars were painted in those colors. I think K-Line and Lionel have done the heavyweight Olympian Hiawatha cars. Both have the maroon stripe over the windows. Has anyone done the cars with the maroon stripe at the top with the rest in orange that would better match the Atlantic tender? I believe some of illustrations show that scheme.
As a youngster in the fifties the Milwaukee Hiawatha passed through my hometown every afternoon. I don't remember any heavyweights, they must have already transistioned from heavyweights to streamliners by then. I remember the Milwaukee orange streamliners then they transistioned to the UP yellow.
I had a Lionel Hiawatha set with the 350 engine. It was beautiful, but I couldn't run it with my 42" curves. So I made one up, sort of...
I took a postwar 238 engine and waffle-top tender, and re-did them in hiawatha colors. Then added 5 low-end Milwaukee Road passenger cars, painted the roofs off-white and the undersides maroon. The bodies already were orange. I added diaphragm vestibules and operating couplers to gussy them up a little.
Anyway, it's not really a Hiawatha, but at least I can run it on my layout.