Examine source code of Big mouth

{
  "theme": {
    "images": {
      "theme_frame": "mouth.jpg"
    },
    "colors": {
      "frame": "#0d35ff",
      "tab_background_text": "#e01414"
    }
  },
  "version": "2.0",
  "name": "Big mouth",
  "manifest_version": 2,
  "description": "Aaaaaaaaaaaaaa~~"
}