Examine source code of Sharks Territory

{
  "theme": {
    "images": {
      "theme_frame": "SHARKSFirefox3.jpg"
    },
    "colors": {
      "frame": "#0f9c89",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Sharks Territory",
  "manifest_version": 2,
  "description": "Shark fans can enjoy having this personalized Sharks Theme to show their support to the team!"
}