Examine source code of The First Snowdrops

{
  "name": "The First Snowdrops",
  "manifest_version": 2,
  "version": "3.0",
  "theme": {
    "images": {
      "theme_frame": "TheFirstSnowdropsHCustom.jpg"
    },
    "colors": {
      "frame": "rgba(203, 207, 216, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)",
      "toolbar": "rgba(206, 210, 219, 0)",
      "bookmark_text": "rgba(0, 0, 0, 1)",
      "toolbar_field": "rgba(206, 210, 219, 0.08)",
      "toolbar_field_text": "rgba(0, 0, 0, 1)",
      "tab_line": "rgba(0, 0, 0, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{5d0d9207-e276-4f49-8445-242c72b4b94d}"
    }
  }
}