Examine source code of Watara Supervision

{
  "name": "Watara Supervision",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Watara Supervision.png"
    },
    "colors": {
      "frame": "rgba(124, 198, 124, 1)",
      "tab_background_text": "rgba(12, 50, 44, 1)",
      "toolbar": "rgba(84, 166, 140, 1)",
      "bookmark_text": "rgba(12, 50, 44, 1)",
      "toolbar_field": "rgba(124, 198, 124, 1)",
      "toolbar_field_text": "rgba(12, 50, 44, 1)",
      "tab_line": "rgba(44, 98, 100, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{1106ad04-0503-4402-a688-c1b21ec96534}"
    }
  }
}