An example of utilizing variables in Sass files

theme.scss

$main-color: #701A14;
$sub-color: #A64C32;
$accent-color: #BF8B5B;

/* Changing color schemes is as simple as updating the 3 lines above */
p {
  color: $main-color;
  background-color: $sub-color;
  .accent {
    color: $sub-color;
  }
}

/* ... */