Examine source code of Amazon River

{
  "name": "Amazon River",
  "manifest_version": 2,
  "version": "2.1resigned1",
  "theme": {
    "images": {
      "theme_frame": "AmazonRiverH1.jpg"
    },
    "colors": {
      "frame": "rgba(6, 82, 181, 0)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(0, 0, 0, 0)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(0, 0, 0, 0)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{858a2837-e017-40ba-83cb-1f1f647abcdd}"
    }
  }
}