Did the C&O actually have these in that paint? http://cgi.ebay.com/N-Scale-Model-Power-4-6-2-C-O-Item-No-7423_W0QQitemZ6014898662QQcategoryZ486QQrdZ1QQcmdZViewItem#ebayphotohosting
No - Model Power is trying to appeal to the largest group it can by offering a "streamline" Pacific such as this which is probably supposed to somehow resemble "The Chessie" re-built F-19 4-6-2s of 1948. The B&O had a similar streamline Pacific re-build for the Royal Blue. I'm not sure what Model Power based their engine on, but it doesn't look like anything on the C&O or B&O as far as I have seen.