chrome quick tabs custm style

.css

body {
  width: 600px;
  font-family: inherit;
}

div.title {
  color: #444;
}

div.url {
  color: #aaa;
}

.item,
.item div.title,
div.closed.item div.title,
.item div.url {
  transition: color ease .1s, background-color ease .1s;
}

.item:hover,
.item:hover div.title,
div.closed.item:hover div.title,
.item:hover div.url {
  background-color: #eee;
  color: #000;
}