I have been experimenting the last couple days. The gold heart was shiny gold yesterday, and today it looks like this.
If you have this magazine you will find this article and all you need to know about changing those shiny gold charms to a beautiful verdigris color.
I wanted fast results so I dipped mine in the solution and let it set for 30 minutes and then took it out to dry and then did it several more times that same day. And it happened quicker than I thought.
Have fun if you have all the elements to experiment.