Examine source code of Kitty on pillow

{
  "theme": {
    "images": {
      "theme_frame": "kittyonpillow1.jpg"
    },
    "colors": {
      "frame": "#0d0101",
      "tab_background_text": "#f7cdcd"
    }
  },
  "version": "2.0",
  "name": "Kitty on pillow",
  "manifest_version": 2,
  "description": "Cute grey white kitty, with blue eyes."
}