Too add to the fun, PRR's Tuscan Red did drift in color depending on what year it was painted. Like any color, it is up the modelers eye to determine what they like.
Diesel passenger locomotives all started getting Tuscan Red in starting in 1952 along with 12 GG1 electrics (10 in 5 stripe and later 2 in single stripe). Freight diesels and steam locomotives were DGLE. This lasted until the end of the PRR in 1967. Passenger cars had Tuscan Red starting in the early 20th century. While freight cars were painted in browner tone that went by many colors "freight car red, oxide red, oxide brown etc", depending on era, some cabins received a dark red color up until the 40's similar to the toluidine red on the number plates.
Personally, I like Tru-Color paints for accurate matches. I find Scalecoat Tuscan Red to be a bit too red, Floquil is a bit too brown.
Off course the later you get in the era of PRR starting in the 50's the color was just normally referred to as "dirt". It was said that the R50b reefer traveled every mile of track in the US with the exception of the wash track.