Examine source code of Jetty in Lake

{
  "name": "Jetty in Lake",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "jetty-in-lake.png"
    },
    "colors": {
      "frame": "rgba(92, 59, 199, 1)",
      "tab_background_text": "rgba(107, 104, 48, 1)",
      "toolbar": "rgba(178, 164, 184, 1)",
      "bookmark_text": "rgba(186, 68, 199, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{b3976595-ec11-4b8c-b45e-59fbd2b22f96}"
    }
  }
}