ND GMCs never had white gauges. Some did have a cream color but I don't know what years.
This truck has GMC gauges. Notice 'FUEL' instead of 'GASOLINE', 60 lb oil pressure gauge, 50 amp ammeter and numbers on the temp gauge rather than H-C.
Edit: Did some research on
oldGMCtrucks.com. 1951 was the transition year. Early '51 and older had cream colored gauges. Later '51s had the Chevy colored ones.