iv been trying to get some material on the union pacific EMC E2A,E2BE2B train sets. The early photo I can find have the roof color of a light mottled brown. I also have some b/w photos I found that it looks like harbor mist grey. When did they change the brown roof color to grey? What was the brown colors name? is there a model paint color match available? With the city series of passenger trains were all the passenger car roof sets initially brown also? If so when did they change to the gray color.