US Army Lanterns in World War Two were produced by Coleman (and probably others) and came in a green color. The images below show a few examples of it, including an unissued one in the original packing material –
There is also a Lantern Gasoline Leaded Fuel, QM 8-Misc 1 quartermaster supply catalog dated Jan 1945 that outlines the spare parts for the unit.
And the Technical Bulletin TB QM-47 June 1945 that explains how to operate and maintain the lantern.
This is in contrast to what is a post-war model, where the lantern is painted olive drab
