Examine source code of The Overseer

{
  "theme": {
    "images": {
      "theme_frame": "TheOverseer.jpg"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "The Overseer",
  "manifest_version": 2,
  "description": "Watching Earth through the windows of the Universe - Credit: Digital Blasphemy"
}