Examine source code of heineken86

{
  "theme": {
    "images": {
      "theme_frame": "heineken-header.jpg"
    },
    "colors": {
      "frame": "#143000",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "heineken86",
  "manifest_version": 2,
  "description": "Hi guys iam a fan of heineken and thought this would be chillin cool as a firefox persona,Everything related to HEINEKEN is their pvt property and this design is for Just fun,Iam not making any profit out of it,THANK u"
}