The recent eBay purchase of the Revell IJNS Shinano kit comes under the glue and black undercoat, the ever faithful Tamiya XF-1 Black (see below):
The only complication with the Shinano (in contrast to her sister hull on the Yamato) is, by virtue of her aircraft carrier conversion, her "rear" is stacked into many (three to be exact) layers that have to be painted then glued together thanks to their relative inaccessibility to a paint brush at a later stage.
Top and bottom assembled on the Shinano (see above). All that is needed is a base coat of dark grey. I am using up a pot of Games Workshop's Foundation Adeptus BattleGrey at the moment (just to use it up). To be fair it has a nice thick coverage.
The IJNS Yamato being in the vicinity of the matt black starts getting a bit of an undercoat too! Steady progress, though not at breakneck speed ;)