Examine source code of Snowfix

{
  "theme": {
    "images": {
      "theme_frame": "snow.jpg"
    },
    "colors": {
      "frame": "#607cc4",
      "tab_background_text": "#f2dc13"
    }
  },
  "version": "2.0",
  "name": "Snowfix",
  "manifest_version": 2,
  "description": "It is becoming that most wonderful time of the year...."
}