I mean that the color has changed. Looks like oxidation to me; brownish and reddish colors do that just by exposure to air. Rene, if you look up "changeling" in our search box you ill find lots of examples.
Changeling has a total different meaning in most Dictionaries, unrelated to our activity but I may be wrong - it is in SCF glossary. So I learned a new word today - Thanks for responding, Peter
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