Examine source code of Hetalia America

{
  "theme": {
    "images": {
      "theme_frame": "AmericaHeader.jpg"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Hetalia America",
  "manifest_version": 2,
  "description": "America from Hetalia mixed with some patriotism.\n\nI don't claim the fanart (if it's yours, I apologize for not asking).  The rest of the design is mine (the part with the stars and stripes)."
}