Well, the answer to this one - like the answer to practically everything else about that ship - is on the George Campbell plans: "Teak buckets, brass hoops, rope handles." No paint.
The rack in which the buckets are mounted consists of a teak rail, mounted on turned teak stanchions, with each stanchion surmounted by a turned brass acorn. The low bulkhead on which the railing sits is iron, "painted with white panels and teak surrounds." I confess that's a little unclear to me, but it doesn't matter much. Most of that bulkhead is concealed by the two boxes attached to the front of it. Those are chicken coops. (If I remember correctly, Revell did a pretty good job with them. There's also a pig pen under the forecastle deck, on the port side. The corresponding space on the starboard side is the paint locker. They're probably not worth worrying about; the space under the forecastle deck is almost impossible to see on the finished model.)
Amazing set of plans. I don't think I've encountered another one that describes the color scheme for the fire buckets.
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