Examine source code of smily dog

{
  "theme": {
    "images": {
      "theme_frame": "123.jpg"
    },
    "colors": {
      "frame": "#bd2020",
      "tab_background_text": "#3b3bb3"
    }
  },
  "version": "2.0",
  "name": "smily dog",
  "manifest_version": 2
}