Examine source code of KDE

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "KDE",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(27, 30, 32)",
      "toolbar_text": "rgb(252, 252, 252)",
      "frame": "rgb(42, 46, 50)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(77, 77, 77)",
      "toolbar_field_text": "rgb(252, 252, 252)",
      "tab_line": "rgb(198, 114, 234)",
      "popup": "rgb(27, 30, 32)",
      "popup_text": "rgb(252, 252, 252)",
      "tab_loading": "rgb(198, 114, 234)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{b4b1d3cf-8f05-4a7c-9a77-b1a86e130f16}"
    }
  }
}