Examine source code of White Worm

{
  "theme": {
    "images": {
      "theme_frame": "whiteworm.jpg"
    },
    "colors": {
      "frame": "#0f8a80",
      "tab_background_text": "#f9f9fc"
    }
  },
  "version": "2.0",
  "name": "White Worm",
  "manifest_version": 2,
  "description": "Lair of the White Worm"
}