Examine source code of Zeppelin01

{
  "theme": {
    "images": {
      "theme_frame": "Zeppelin01.jpg"
    },
    "colors": {
      "frame": "#0f0202",
      "tab_background_text": "#0a0101"
    }
  },
  "version": "2.0",
  "name": "Zeppelin01",
  "manifest_version": 2
}