Anglo-Zulu War RA 7 Pounder colour help

[Onebigriver]

I've got two of Empress' Royal Artillery 7 Pounders to paint, but I'm struggling to find any colour references or descriptions to aid painting. Can anyone help?

[Malamute]

Blue grey for the wheels and carriage.

[Driscoles]

I think I used Valejo Luftwaffe Uniform colour.
Its a nice blue grey !

[Andrei1975]

Here is an example I used. Color picked himself, mixing blue and gray.

[duhamel]

the right color 0.6% white + 0.49 black 66% blue cielle 00.45872147% dark blue 05547% light gray a little close no no joking 

[Onebigriver]

Thanks all!