I agree with you. And the reason for such elaborate test was to prove to the people who doubt your process really make any sense at all. In fact you were right about blackish water.
In one of my experiments in an attempt to make a consistent energized water, I put in silver and gold inside a stainless steel container, without using any electricity. Apparently what I got is a very black gold apparently there is something going on in here. I am writing to confirm your observations.