Examine source code of Early Winter Snow

{
  "name": "Early Winter Snow",
  "manifest_version": 2,
  "version": "5.0",
  "theme": {
    "images": {
      "theme_frame": "EarlywintersnowH1Custom.jpg"
    },
    "colors": {
      "frame": "rgba(184, 216, 255, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)",
      "toolbar": "rgba(207, 227, 252, 0)",
      "bookmark_text": "rgba(0, 0, 0, 1)",
      "toolbar_field": "rgba(204, 227, 255, 0.07)",
      "toolbar_field_text": "rgba(0, 0, 0, 1)",
      "tab_line": "rgba(173, 0, 0, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{b4d03e0f-d6a2-41d6-8a7e-9e81d7a85417}"
    }
  }
}