Generated by SassMeister.com.

SassMeister-input-HTML.html

<a href="#" class="black">black</a>
<a href="#" class="grey">grey</a>
<a href="#" class="red">red</a>

SassMeister-input.scss

// ----
// libsass (v3.2.5)
// ----

$colors: #000, #666, #ff0000;
.black{
  color:nth($colors,1);
}
.grey{
  color:nth($colors,2);
}
.red{
  color:nth($colors,3);
}

SassMeister-output.css

.black {
  color: #000;
}

.grey {
  color: #666;
}

.red {
  color: #ff0000;
}

SassMeister-rendered.html

<a href="#" class="black">black</a>
<a href="#" class="grey">grey</a>
<a href="#" class="red">red</a>