Haze gray appears to have been neutral gray, closely resembling FS-36270. Medium gloss gray, blue tint.
I cant find anything really difinitive, so I matched a navy instrument housing from the era.
Sprayed a color card with testors 36270, then clear coated the card with satin clear.
Then I mixed 2 parts rustoleum semigloss white, 1 part gloss black, and added gloss royal blue to match tint.
I can give you the parts to mix a gallon later.
The wheels have final paint colol on the them. the body is still in gray primer