Dave. Colours on models need to be adjusted sometimes to achieve the right result.
Case in point was painting the deck of my 48 inch Titanic. I ended up with Humbrol pale stone colour (from memory) as this was the consensus of opinion on ‘t net, but smaller models or larger models might need a different colour. Imagine a 1/600 model with a very pale deck, it would look almost white.
I once read an article on painting models by a chap in an old boat mag, he had made a Dreadnought, or something similar, and painted it correctly….all dark grey. The result was that a lot of the detail disappeared as it blended in, and the boat looked very dull, and this was on a big 6 foot model.
Flags, go for it. Biggish “battle” ensign on the main mast to add a bit of pazazz to the deck and a splash of colour.
Ashley.