Examine source code of Gray Crowned Crane

{
  "theme": {
    "images": {
      "theme_frame": "graycc.jpg"
    },
    "colors": {
      "frame": "#b8b2b2",
      "tab_background_text": "#faf9f0"
    }
  },
  "version": "2.0",
  "name": "Gray Crowned Crane",
  "manifest_version": 2,
  "description": "gray crowned crane"
}