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Well Chris I also searched high and low for an answer as well and finally just had to find out on my own. Str8 "Love "will def. change its color, with that being said you will have no problems with the copper if you follow thes guid lines. One obviously keep the entire outside wet constantly. Two wet down the inside real well prior to starting and take "time outs "to re rinse them during application. This is def. one of the many jobs where "the ground guy"is in control...he says wait you wait. Now it sounds easy right? But you forgot that this is just another MAIN ITEM you have to keep soaked during execution, shrubs decks etc also nee alot of water so you have to stay on top of your game. I really should right a book, what do you think Art?

No the problem is the customer wants to keep the patina..!!!

Have a second hose spraying down the valley the entire time.

I have never had an issue, although I always go the extra mile because I am scared to ruin the finish.