You have need a gemini skin tar.gz. You can find the skins in this forum, I use the E1 essential72 persian GP.4.6.0 tar.gz., a very good and beautiful skin
You must unzip this file in your pc, via dcc copy to tmp and then in the 500S addons handmade installation, oke and then by(menu) install, you can find this skin and you put the skin in the box.
It's very easy to try.
Success!!!!
Altobelli :thum: