That reference is generally ok for CW, with some errors, but the 3-inch Stokes was not loaded with CW, except in limited trials, and would not have used the CW color scheme. Even the CW stuff varied quite a bit. Here is a 4-inch filled with FS smoke (considered a CW fill at the time). What paint is left is original, the location of the bands varies a bit from the document shown.
I've seen very few 3-inch with original paint, and then there normally isn't much left. Here are the only three I have with any paint on them, the first two I believe are original paint, the third (yellow) I highly doubt.
Inertordnance, the ref you show came out in three versions, the best was the last, I believe dated around 1996. Contractors were allowed to do research in a military library, it is a good document in identifying the variety of munitions, but the understanding of the munitions by those who were doing the research was weak, and it flaws the document. The best thing that they did in that document was to list their references, for that alone it's a treasure trove. A much better source is Chemicals in War, 1937, by Prentiss. Give it a try and I think you'll be pleased.