Examine source code of langston

{
  "theme": {
    "images": {
      "theme_frame": "lang.jpg"
    },
    "colors": {
      "frame": "#00aeff",
      "tab_background_text": "#0088ff"
    }
  },
  "version": "2.0",
  "name": "langston",
  "manifest_version": 2,
  "description": "Langston from jerkin crew The Ranger$"
}