.wy-side-nav-search, .wy-nav-side {
  background: #2b1b3a;
}


.wy-side-nav-search input[type="text"] {
  border-color: #6f42c1;
}


a { color: #6f42c1; }
a:hover { color: #5a32a3; }


.wy-menu-vertical li.current > a {
  border-right: 4px solid #6f42c1;
}

.wy-menu-vertical p.caption {
    color: #DBD8E9 !important;   /* 你想要的紫色 */
    font-weight: 700;
    letter-spacing: 1px;
}