Examine source code of Lonely Snowman

{
  "theme": {
    "images": {
      "theme_frame": "header563.jpg"
    },
    "colors": {
      "frame": "#d9d5d5",
      "tab_background_text": "#9a99ff"
    }
  },
  "version": "2.0",
  "name": "Lonely Snowman",
  "manifest_version": 2,
  "description": "Lonely Christmas Snowman under a streetlamp."
}