union pacific overland limited color

When did the overland limited start to use the two tone grey colors ?

Hello Vance, The Union Pacific started painting its non-Streamliner passenger equipment two-tone gray in 1946. However, in 1951 the railroad changed its standards and began painting all of its passenger cars yellow and gray with red striping and lettering. All the gray cars weren’t repainted immediately, but within a few years two-tone gray UP cars became very rare. So long, Andy

Prior to 1946, the Challenger Equipment was painted a dark green, roughly the shade of Floquil Coach Green

Ch