metricio/metricio

.widget__number {
  background-color: #47bbb3;
}

$colors: #2ecec5, #348aa7, #525174, #694d70;
$repeat: 8;

@for $i from 1 through $repeat {
  .widget__number:nth-child(#{length($colors)}n + #{$i}) {
    background: nth($colors, random(length($colors)));
  }
}