C2 or B3 look about the right colour.
Christ, and they call me a ponceA4 is the closest, but it's still far too strong. Tea needs to be extremely high quality and made extremely weak (a teaspoon of leaves to a large teapot is about right). It then needs to be poured within a few minutes before the tannins can really get extracted.
At last, a fellow B3er. I was beginning to think I was a bit odd
....oh, hang on, it's 3BM
I only put that down so you wouldn't look the sad lonely twat you are, I'm just too kind.