Examine source code of Snow Bots

{
  "theme": {
    "images": {
      "theme_frame": "snowbots.png"
    },
    "colors": {
      "frame": "#adadad",
      "tab_background_text": "#333333"
    }
  },
  "version": "2.0",
  "name": "Snow Bots",
  "manifest_version": 2,
  "description": "It's that time of the year when the snow bots start falling."
}