Examine source code of Glowing Red Galaxy

{
  "theme": {
    "images": {
      "theme_frame": "Galaxie.png"
    },
    "colors": {
      "frame": "#ffb300",
      "tab_background_text": "#ffb300"
    }
  },
  "version": "2.0",
  "name": "Glowing Red Galaxy",
  "manifest_version": 2,
  "description": "Galaxy... Picture taken by NASA, Wikimedia Commons Gallery"
}