I hope some knowledgable people out there can give me some advice!

I'm intending to use copper microbore (8mm & 10mm) to make a "twisting" garden sculpture. I'd like to know what colour this will end up when left outside, as I don't know whether microbore is "annealed" or "enamelled" or not treated at all.

I may also incorporate some smaller wire for decoration - I'm considering Enamelled Copper Wire (2mm) which I assume would stay "shiny" even outside? Or possibly annealed copper wire (like that used for binding bonsai trees!) - I believe the latter would end up a dull sort of brown colour - am I right? (probably not!!)

Many thanks in advance of any kindly forthcoming help...