Examine source code of Skull Flames 2

{
  "theme": {
    "images": {
      "theme_frame": "Head.jpg"
    },
    "colors": {
      "frame": "#e69d00",
      "tab_background_text": "#ffaa00"
    }
  },
  "version": "2.0",
  "name": "Skull Flames 2",
  "manifest_version": 2,
  "description": "Hopefully a better version of the first Skull Flames"
}