Examine source code of Green forest

{
  "name": "Green forest",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "0-d7213ee2-c8b9-4b7c-8d9b-13248f7646b6.jpg"
    },
    "colors": {
      "frame": "rgba(20, 61, 35, 1)",
      "tab_background_text": "rgba(156, 189, 132, 1)",
      "toolbar": "rgba(110, 143, 118, 1)",
      "bookmark_text": "rgba(74, 204, 139, 1)",
      "tab_line": "rgba(43, 140, 127, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{eb20a5ed-8bb8-4075-8a55-8a6ac7b6e2ff}"
    }
  }
}