OK,
You must provide a picture as an example.
If you mean patina - than antique paste/gel is it. If you mean Platina (the metal) than this is what you want: https://www.amazon.com/Jacquard-Lumiere-Metallic-Acrylic-Ounces-Pearlescent/dp/B007Y0D0A6/ref=sr_1_13?ie=UTF8&qid=1482334632&sr=8-13&keywords=acrylic%2Bleather%2Bpaint&th=1