Hi I'm working on an old style cash box cake. I have gray fondant that I have started making my chains with. I also need to make some locks, keys, coins, etc... How could I give the fondant that old metal look. Not shiny, but old/rusty?

Thanks so much!!!

Ai would make a dust with red/orange powdered color mixed with a little cocoa and also dust with plain cocoa to age it or brown powered color -- i would make a seam be coming apart and a little crumble disintegration