Examine source code of Pow Haha

{
  "theme": {
    "images": {
      "theme_frame": "Powhaha.jpg"
    },
    "colors": {
      "frame": "#000000",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Pow Haha",
  "manifest_version": 2,
  "description": "All copyright to Valve corporation. \nI love those guys (:P)\n\nI made this just for fun i know its something ugly :( but it my first work soooo dont be mean ;)"
}