Chinese vendors are having a discussion over translating the Chinese
tea type "black tea" into English. For so long, what Chinese call "red
tea" has always been called "black tea" in the West. Now, when they
want to market black tea, ie., post-fermented tea, they don't know
exactly what to call it.

Some suggested using the word "dark tea". But others in China don't
like the idea; since it doesn't fully describe the color black, and
has too many other connotations.

I tried looking for synonyms for "black" but none seem to be suitable.

Are there any alternatives? What would be an acceptable name to
describe "Chinese black tea" in the West?