Examine source code of Fall To Winter II

{
  "name": "Fall To Winter II",
  "manifest_version": 2,
  "version": "5.0",
  "theme": {
    "images": {
      "theme_frame": "FallToWinterH2Custom.jpg"
    },
    "colors": {
      "frame": "rgba(179, 197, 224, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)",
      "toolbar": "rgba(0, 0, 0, 0)",
      "bookmark_text": "rgba(0, 0, 0, 1)",
      "toolbar_field": "rgba(177, 196, 224, 0.06)",
      "toolbar_field_text": "rgba(0, 0, 0, 1)",
      "tab_line": "rgba(0, 0, 0, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{e426ca6f-a256-4910-8e9a-0cf352e8fc4a}"
    }
  }
}