Examine source code of red blood

{
  "theme": {
    "images": {
      "theme_frame": "2.jpg"
    },
    "colors": {
      "frame": "#666666",
      "tab_background_text": "#bf0707"
    }
  },
  "version": "2.0",
  "name": "red blood",
  "manifest_version": 2,
  "description": "this is made by Eduardo Escamilla if you like this Personas for Firefox contact my on my myspace.com/eaescamia"
}