Examine source code of KDE Simple

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "KDE Basic",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(71, 80, 87)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(255, 255, 255)",
      "tab_background_text": "rgb(71, 80, 87)",
      "toolbar_field": "rgb(71, 80, 87)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(71, 80, 87)",
      "popup": "rgb(255, 255, 255)",
      "popup_text": "rgb(0, 0, 0)",
      "ntp_text": "rgb(0, 0, 0)",
      "tab_loading": "rgb(71, 80, 87)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{b73e6be1-7c2a-4259-8f8b-64e200c318d4}"
    }
  }
}