Examine source code of Black Gustavo 2010

{
  "theme": {
    "images": {
      "theme_frame": "EncabezadFireFox.jpg"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Black Gustavo 2010",
  "manifest_version": 2,
  "description": "This is a Simple Glass Theme for FireFox, i made it in Photoshop :) I Thik its Pretty Cool, but i did for my Personal Use, so if you don´t like, i don´t really mind. And If you Like It, well Thanks."
}