This is a complicated question.
If you intend to do her in her museum condition--a valid choice--with natural decks and haze grey verticals, that will be fine. You'll still need a dark grey for the steel decks and horizontals.
As for all the "bits" on the bulkheads, that depends upon which "bit" it is.
Racks of fire hoses will be a whitish grey color. But, fire fighting reels will be red. Cordage reels will be bulkhead color. Note that the flight deck area is a very dark charcoal grey, significantly darker than deck grey. Non-skid areas on metal decks are a similar color, too.
"Bollards" are shore based moorings, and are in several colors. On board ships, they are called "bitts" and are nearly uniformly hull color (although, they are sometimes in deck color)--you need reference photos.
From a quick dash through google images, the museum at Pearl has black bollards on the dock. Most of the deck items are in haze grey. Note that most of the close-up museum photos are showing a silver-grey wood tone for the deck (very much like a wooden privacy fence i nthe US), and not the very tan raw-wood look.
Without a photo or diagram of the area in question, it's hard to answer what "bits" are there, and whot color they ought be.
USN loves its Haze Grey (and now the pre-catalysed acriling formulations of same) and will apply it to many things. Usually only excepting brone, brass, gunmetal, or natural materials (and even those, too--like cork, wood, canvass and the like).
Asking us what a doodad is here (with a photo or diagram) can help answer the question.