Examine source code of SimsTR

{
  "theme": {
    "images": {
      "theme_frame": "simstrmicin.jpg"
    },
    "colors": {
      "frame": "#140f8c",
      "tab_background_text": "#0c238a"
    }
  },
  "version": "2.0",
  "name": "SimsTR",
  "manifest_version": 2,
  "description": "SimsTR icin yaptigim Firefox temasi"
}