Recalling Weaver's run of this iconic car style, the B&O cars were accurate in several colors, depending on the era and the type of service. From red to brown, green to blue, there were at least 4 colors that were commonly seen on the Beano through this car's active lifetime. I'm sure that Beanophiles will chime in with more details.
I seem to recall that Tru-Color Paints offered specific B&O colors for some of the different eras/service. Not sure they're all currently available, but their website can probably answer that.
Besides.....as with all RR colors, time, weather, batch, sun, shade, seagull bombs,....cataracts in the eyes of the beholder....they all played a part in the 'fidelity' of color. OTOH, some of those heated discussions at the Trains Department counter of our store (LHS) provide more amusement than a Minions movie,....IMHO, of course.
FWIW, always...
KD
