The 545th Military Police Company has seen action in a variety of places. Some of this history is captured in a “Pictorial History of Vehicles” page they’ve assembled. Naturally, there is a section on jeeps. Below are a few of the photos. See all the photos here: http://www.545thmpassn.com/Vehicles.htm

This 1949 color photo shows the yellow and black paint scheme:

545th MP Co. Yellow Jeep, Camp McNair, Japan 1949

I think the purpose of this vehicle is pretty obvious:

This jeep was utilized exclusively to escort VIPs’ and General Officers at Camp Drake Note the abundance of red lights and the siren

This photo shows a good view of the black striped hood:

545th MP Co yellow jeep at Camp Drake, Japan circa 1949

Some of the M-38A1s had an unusual paint scheme:

545th MP Co. Willys Jeep near Mt. Fuji, Japan 1954 – 1955 — M-38A1