Examine source code of Doomsday 666

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#053054",
      "tab_background_text": "#a4a5a6"
    }
  },
  "version": "2.0",
  "name": "Doomsday 666",
  "manifest_version": 2,
  "description": "Planet Earth in the night sky. in front of a flying eagle (black silhouette). The lower part temlate: Dark sky - graves and trees without leaves. The combination of colors: dark blue, black, light gray"
}