Examine source code of quechucha.org

{
  "theme": {
    "images": {
      "theme_frame": "firefxx.jpg"
    },
    "colors": {
      "frame": "#992323",
      "tab_background_text": "#40d3ed"
    }
  },
  "version": "2.0",
  "name": "quechucha.org",
  "manifest_version": 2,
  "description": "para firefox"
}