Honda CF70 Wheels Paint code help please.

Hi there. I wonder if any of you ST70 guys could help. I have 2 Honda CF70`s in red, 1st registered in 1981/3. They have silver / grey wheels, and the exhaust cover. I am trying to find the exact color and code that they had when new. Ive tried Cloud Silver Metallic code NH-35M, and Holts HSILM 19 but they seem too bright & shiny, the correct color appears to be more of a Grey. I am trying to get them 100% original, or as close as poss but this paint code is becoming a problem. Any help or info would be greatly appreciated. Ben.