Examine source code of Fanciful Unicorns

{
  "theme": {
    "images": {
      "theme_frame": "Unicorn.jpg"
    },
    "colors": {
      "frame": "#2a296b",
      "tab_background_text": "#ffed96"
    }
  },
  "version": "2.0",
  "name": "Fanciful Unicorns",
  "manifest_version": 2,
  "description": "Fanciful unicorns"
}