The shipcamouflage.com database shows that the Mobile was in Ms 22 in early 43 and again in 1945. She was in Ms 21 in late 43 and 1944.
http://shipcamouflage.com/usn_cl.htm
Ms 21 is overall Navy Blue (5-N).
Ms 22 is Navy Blue on the hull to the lowest level of the sheer and Haze Gray (5-H) above that.
Decks in both instances would be Deck Blue (20B).
The color callouts in the kit are suspect.
The easiest camouflage to do would be the Ms21 - Overall Navy Blue.
There is only one choice for out of the bottle (tin) enamel. That is the Colourcoat line of paints by White Ensign Models. These paint colors are based on the 1929 Munsell Color standard used by the Navy. ModelMaster Acrylics used to have a marine line of paint which was based on Colourcoats as standard. They are now out of production. The other acrylic line of paints which is close is Pollyscale's naval colors. They are close, but not totally accurate
http://www.testors.com/category/137832/PostwarWWII_US_Naval_Vessel