Examine source code of Katze Kittycat Ballon

{
  "theme": {
    "images": {
      "theme_frame": "kittycat_ballon_k.jpg"
    },
    "colors": {
      "frame": "#f2920c",
      "tab_background_text": "#c40df7"
    }
  },
  "version": "2.0",
  "name": "Katze Kittycat Ballon",
  "manifest_version": 2,
  "description": "Katze Kittycat fliegt in einem Ballon/Cat Kittycat flying in a balloon"
}