Examine source code of Hello Kitty Cat

{
  "theme": {
    "images": {
      "theme_frame": "HelloKittyCatHeader.jpg"
    },
    "colors": {
      "frame": "#ffed4f",
      "tab_background_text": "#ffed4f"
    }
  },
  "version": "2.0",
  "name": "Hello Kitty Cat",
  "manifest_version": 2,
  "description": "Hello Kitty Cat"
}