Examine source code of Boxdragon

{
  "theme": {
    "images": {
      "theme_frame": "boxdragonheader.png"
    },
    "colors": {
      "frame": "#ffdd00",
      "tab_background_text": "#733c1b"
    }
  },
  "version": "2.0",
  "name": "Boxdragon",
  "manifest_version": 2,
  "description": "Boxdragon love!"
}