Examine source code of Super Cute Black Cat

{
  "theme": {
    "images": {
      "theme_frame": "blackcat1_header.jpg"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#402000"
    }
  },
  "version": "2.0",
  "name": "Super Cute Black Cat",
  "manifest_version": 2,
  "description": "very cute black cat. ideal for Halloween."
}