查看“MediaWiki:Common.css”的源代码

html, body {
  background-color: #000000 !important;
  color: #f0f0f0 !important;
}
/* 内容区域黑色 */
body,
#content,
#mw-content-text,
.mw-body,
.vector-body,
.skin-vector,
.skin-vector-body,
.skin-vector .mw-page-container,
.skin-vector .mw-content-container {
  background-color: #000 !important;
  color: #f0f0f0 !important;
  border: none !important;
  box-shadow: none !important;
}

/* 顶部栏也黑 */
.vector-header,
.vector-header-container,
.vector-sticky-header {
  background-color: #000 !important;
  color: #fff !important;
  border: none !important;
}

/* 表格黑色风格 */
.wikitable {
  background-color: #111 !important;
  color: #eee !important;
  border: 1px solid #333 !important;
}
.wikitable th {
  background-color: #222 !important;
  color: #fff !important;
}
.wikitable td {
  background-color: #111 !important;
  color: #ccc !important;
}