Examine source code of Idefix

{
  "theme": {
    "images": {
      "theme_frame": "idk.jpg"
    },
    "colors": {
      "frame": "#de2424",
      "tab_background_text": "#080707"
    }
  },
  "version": "2.0",
  "name": "Idefix",
  "manifest_version": 2
}