Examine source code of KJDE

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "KJDE",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(255, 143, 0)",
      "toolbar_text": "rgb(27, 27, 27)",
      "frame": "rgb(27, 27, 27)",
      "tab_background_text": "rgb(237, 222, 184)",
      "toolbar_field": "rgb(27, 27, 27)",
      "toolbar_field_text": "rgb(255, 143, 0)",
      "tab_line": "rgb(255, 143, 0)",
      "popup": "rgb(27, 27, 27)",
      "popup_text": "rgb(255, 143, 0)",
      "tab_loading": "rgb(255, 143, 0)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{eb4e0f9e-155e-4d97-857c-77835bd79ae0}"
    }
  }
}