Examine source code of Drifted Column Notes

{
  "manifest_version": 2,
  "name": "Drifted Column Notes",
  "version": "1.0",
  "description": "An editorial-inspired theme built around quiet columns, gentle contrast, and the feeling of notes drifting across a printed page. Designed for calm focus and long-form reading.",
  "theme": {
    "colors": {
      "frame": "#232629",
      "tab_background_text": "#e8e8e8",
      "toolbar": "#2f3439",
      "toolbar_text": "#e8e8e8",
      "toolbar_field": "#f5f5f5",
      "toolbar_field_text": "#232629",
      "tab_line": "#7c838c"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{93f13a98-f13f-405d-a61c-1f1670ab7431}"
    }
  }
}