I was about to make a new thread asking the same thing but used the search option and found this! Was looking for one for the NWS11 mod as well. Thought somebody was already working on it a month or so ago but I might be wrong.
The layer named 'chrome' in the BR temps is silver or metallic at best. It is not, in my opinion, chrome. The only layers I ever saw that truly emulated chrome were done by Johan Lofgren, the last were for the SS.net mod, and he has sort of disappeared since.