Examine source code of Marsh Sunset by M♥Donna

{
  "name": "Marsh Sunset by M♥Donna",
  "manifest_version": 2,
  "version": "4.0",
  "theme": {
    "images": {
      "theme_frame": "MarshSunsetH1copy.jpg"
    },
    "colors": {
      "frame": "rgba(46, 67, 92, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(47, 67, 94, 0)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(47, 67, 94, 0.06)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)",
      "tab_line": "rgba(255, 255, 255, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{707ed402-a410-4de5-8c89-9636bff4403c}"
    }
  }
}