Examine source code of The first one

{
  "theme": {
    "images": {
      "theme_frame": "DerBeweis.jpg"
    },
    "colors": {
      "frame": "#362c2c",
      "tab_background_text": "#e4f2f0"
    }
  },
  "version": "2.0",
  "name": "The first one",
  "manifest_version": 2,
  "description": "Auf dem Mond?"
}