Examine source code of Nerd Fighters

{
  "theme": {
    "images": {
      "theme_frame": "NERDFIGHTERS_3.jpg"
    },
    "colors": {
      "frame": "#ff0000",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Nerd Fighters",
  "manifest_version": 2,
  "description": "This goes out to all the Nerd Fighters out there in Nerd Fightaria! XD"
}