Examine source code of Midnight Serenity

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Midnight Serenity",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(26, 26, 29)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(45, 45, 48)",
      "tab_background_text": "rgb(128, 128, 128)",
      "toolbar_field": "rgb(77, 77, 80)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(255, 99, 71)",
      "popup": "rgb(26, 26, 29)",
      "popup_text": "rgb(255, 255, 255)",
      "tab_loading": "rgb(255, 99, 71)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{21035f75-f4f3-474f-83c9-d6fdf0e1344e}"
    }
  }
}