Examine source code of Simpsons dance

{
  "name": "Simpsons dance",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "landscape-1465994865-ezgifcom-video-to-gif.gif"
    },
    "colors": {
      "toolbar": "rgba(0, 0, 0, 1)",
      "toolbar_field": "rgba(101, 119, 168, 1)",
      "toolbar_field_text": "rgba(184, 182, 121, 1)",
      "frame": "rgba(0, 0, 0, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)",
      "bookmark_text": "rgba(0, 6, 184, 1)"
    }
  }
}