Top: At Altoona on April 18, 2012, NS ES44AC No. 8102 wears Pennsylvania Railroad's Tuscan Red with five pinstripes and the keystone in a circle, which was unique to the PRR's passenger Baldwin Sharknose diesels.

Bottom: The Pennsylvania Railroad pinstripe livery, designed for the GG1 electric and subsequently deployed on seven EMD, Alco, and Baldwin cab-diesel models, never graced a hood unit. The version applied to NS 8102 most closely resembles that of PRR’s Baldwin model DR-6-4-20 passenger “Sharknoses,” like No. 5771 at South Amboy in June 1957. Among PRR diesels, the keystone-within-circle motif was unique to the Sharks. All of PRR’s Sharks, passenger and freight, were delivered in dark green, which was replaced by red for the passenger units beginning in 1952. Although there were exceptions, when the Sharks and other PRR passenger power were green, the nose keystone contained the road number; when red, the keystone contained the “PRR” monogram. In the late 1950s, some Sharks received the single-stripe/large lettering livery carried by No. 5783 in the photo. By the time of the 1968 Penn Central merger, Pennsy had retired all its non-EMD passenger cab units.