I would opt for white being correct, the colour you have as more cream likely a washout or chemical change in the composition over years. 
Olive drab paint for example is the worst for this. Look at the colour of original WW2 Canadian vehicles and you would think they painted them mustard yellow as years of sun fading.
		 
		
		
		
		
		
		
			
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				3RD Echelon Wksp 
 
1968 M274A5 Mule Baifield USMC 
1966 M274A2 Mule BMY USMC 
1966 M274A2 Mule BMY USMC 
1958 M274 Mule Willys US Army 
1970 M38A1 CDN3 70-08715 1 CSR 
1943 Converto Airborne Trailer 
1983 M1009 CUCV 
1957 Triumph TRW 500cc 
 
RT-524, PRC-77s,  
and trucks and stuff and more stuff and and....... 
 
OMVA, MVPA, G503, Steel Soldiers
			 
		
		
		
		
		
	
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