Examine source code of JeepWJ

{
  "theme": {
    "images": {
      "theme_frame": "JeepWJ_header.png"
    },
    "colors": {
      "frame": "#9c9c9c",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "JeepWJ",
  "manifest_version": 2,
  "description": "Similar to the standard Firefox skin, but featuring a modified Jeep Grand Cherokee behind the search box"
}