Examine source code of Kitty Sparkles

{
  "theme": {
    "images": {
      "theme_frame": "SprklesHead.jpg"
    },
    "colors": {
      "frame": "#257ff5",
      "tab_background_text": "#fcf9f9"
    }
  },
  "version": "2.0",
  "name": "Kitty Sparkles",
  "manifest_version": 2,
  "description": "My exotic kitty Sparkles in various poses on a star background"
}