Early model Tritons shared the same aluminum casting with the Ariels (Triton #15 is stored next to Ariel #231 this winter, we've compared the original parts they are dimensionally identical). Some Triton models (e.g. Triton #381 built in 1963) were originally shipped with nickle (or chrome) plated bronze port light frame.

For those with deep pockets, chrome is always an option.....