Gray Phase. On Saturday, November 9, 2019, Genesee Valley Transportation / Delaware-Lackawanna DL 3007 (ex-GECX 3007, exx-BCOL 707, née PGE 707, MLW M630, built 12/1970) led DL 3642 (ex-DBT 1001, exx-CR 6792, née PC 6792, Alco C636, built 4/1968) on Train PO74 during its run to Cresco, Pennsylvania. Delaware Lackawanna 3007 had been restored to service by the DL earlier that year in its GECX liveried state. Fast forward to 2026, and the unit has been renumbered to DL 1776 and repainted into a special scheme commemorating the 250th anniversary of the United States. Thus far, it is the only announced MLW (or Alco relative of any kind, for that matter) that will be in attendance at the America 250 Locomotive Celebration at the North Carolina Transportation Museum. The train is seen here passing through Pocono Summit, Pennsylvania.

Full resolution pics and prints:
https://www.riverrailphoto.com/dl/e5cf0ade3

More on the America 250 Locomotive Celebration:
https://www.nctransportationmuseum.org/america-250-locomotive-celebration/