Examine source code of mcrpicture

{
  "theme": {
    "images": {
      "theme_frame": "firefoxbanner1.jpg"
    },
    "colors": {
      "frame": "#9c4e4e",
      "tab_background_text": "#f7f4f4"
    }
  },
  "version": "2.0",
  "name": "mcrpicture",
  "manifest_version": 2,
  "description": "-_-"
}