Examine source code of Twisted Yarn

{
  "theme": {
    "images": {
      "theme_frame": "4.jpg"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Twisted Yarn",
  "manifest_version": 2,
  "description": "Twisted hank or skein of hand dyed yarn in greens and rust oranges."
}