Examine source code of The Barrel

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "The Barrel",
  "manifest_version": 2,
  "description": "Looking down the line of a giant wave is something you have to experience to truly feel the awesomeness. It either scares you to death or you begin to paddle your surfboard to catch it."
}