Not sure if it is a good equivalent for the paint. I have had a look around and it is suggested using of a mix of the Vallejo Model Color series for the coat.
#5 Standard Navy Gray (1937) - 70990 + 70919 (Light Grey + Foundation White mix ratio 1:1)
Around my house if one were to mention USS Yorktown it was understood that the carrier mentioned was CV-5. If you wanted to talk about her namesake you simply said "CV-10."