It's not likely they got it correct with regard to the main color, but there is a chance.
First off, no one has absolute proof for December 7th... it's a very muddy issue. It gets tension charged because of some past events as well as frustration from guys who just want to know how to paint their model and really don't like finding out there's this whole argument back and forth.
There were a bunch of posts that were removed from this thread earlier today; I had nothing to do with that; I neither reported of complained about what was said... I just wanted to get that out there to stave off another round of angry PMs from CBAX and NBXAT.
OK, short, short version of 1941 US Navy Camouflage... still many questions, but you can see what I've found in three different US National Archives branches here. Is it definitive? Far from it.
Essentially, The Navy transitioned from the camouflage they had been using for 20 years in 1941, and did it poorly. In January, they released SHIPS-2, which defined new colors, including 5-D Dark Gray, 5-0 Ocean Gray, and 5-L Light Gray. Camouflage Measure 1, which the majority of the fleet was to be painted in, consisted of 5-D on vertical surfaces from the waterline up to the top of the smoke stack, and then 5-L above that. In order to save paint, they came up with a conversion paste that could be mixed to the pre-war gray to color it to an equivalent of 5-D. They had production problems though, and we don't see evidence of ships at Pearl Harbor painted into Measure 1 until June of that year.
By this time, the Bureau of Ships had become unhappy with 5-D (adhesion problems and it "chalked" quickly) and had started working on a replacement. On the last day of July, they ordered 5-D discontinued and replaced with 5-S, referred to as Sea Blue. Keep in mind this is four months before the attack on Pearl Harbor. In August the one yard responsible for paint on the West Coast (Mare Island Navy Yard) starts sending letters to ships and other yards canceling their requests for 5-D and telling them to resend requests for 5-S. Pearl Harbor Navy Yard managed to lose their copy of this memo for six weeks, finding it in mid October. However, other commands at Pearl Harbor such as the Commander of Cruisers, Battle Force, and individual ships such Arizona herself, receive their copies.
So, what we don't have in the documentation is an order for Arizona to paint in 5-S. We don't have any correspondence the shows she received any from Mare Island. We do know she was repainted in late October/early November following a collision with another ship, but did she use her own stocks or Pearl Harbor's? Did she repaint based on orders Pearl Harbor had for how to paint ships, or specific orders to her or her BatDiv that have not been located (and might not exist?)
There is plenty that can point in either direction. I've made three trips to the records of Pearl Harbor and Mare Island Navy Yards and am planning a trip to go through records of other commands... it is something I am "actively" pursuing, but by active, I mean one or two trips per year as my HOBBY dollars allow.
The Trumpeter paint guide calls for Navy Blue and white... the white is definitely wrong. we have no evidence that Navy Blue reached Pearl Harbor before the attack, but we do know they knew about it, having had a camouflage experiment using it ordered in mid/late November. 5-N Navy Blue used the same ingredients as 5-S, 5-O, and 5-L, so it would be something that they could have fairly easily and "instantly" switched to before the attack once they knew the mixing rations of the tinting paste and untinted white base.
5-D is safest.