Copper bottom question

It’s hard to see, but one guy in the pic looks like he’s got the roll of Copper.
 
Ironically,by far the best Patina I have seen on a coppered hull was created by wiping on human urine.That is no joke.honestly!

I coloured my copper plates on the Agamemnon with urine (mine and applied by BRUSH). Bit messy but great patina. The smell disappeared after several weeks.
 
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