Examine source code of Vicenterik

{
  "theme": {
    "images": {
      "theme_frame": "firefoxbot2.png"
    },
    "colors": {
      "frame": "#635050",
      "tab_background_text": "#333333"
    }
  },
  "version": "2.0",
  "name": "Vicenterik",
  "manifest_version": 2,
  "description": "Usalo :D"
}