Examine source code of Color Picker Game

{
  "manifest_version": 2,
  "name": "Color Picker Game",
  "version": "1.0",
  "description": "Color Picker is a fun game In this game, the player will try to pick the same color as the computer has chosen. This is an intuitive and easy to implement game.",
  "permissions": [],
  "browser_action": {
    "default_popup": "game.html",
    "default_icon": {
      "128": "images/colo-logo.png"
    }
  },
  "icons": {
    "128": "images/colo-logo.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{da17f8c8-d6cb-41ed-882a-949b7c7425f7}"
    }
  }
}