Examine source code of Sunlit Waterfall

{
  "name": "Sunlit Waterfall",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Sunlit Waterfall.jpg"
    },
    "colors": {
      "frame": "rgba(229, 230, 232, 1)",
      "tab_background_text": "rgba(28, 166, 0, 1)",
      "toolbar": "rgba(0, 0, 0, 0)",
      "toolbar_field": "rgba(0, 0, 0, 0.05)",
      "toolbar_field_text": "rgba(239, 255, 92, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{3b76d9a1-9ff8-447c-8822-41e2b81701b8}"
    }
  }
}