// define your colors
colors = {
  'pink': #E2127A,
  'brand-primary': 'pink',
  'site-background': 'brand-primary',
}

// color function
get_color(color)
  // our conditional statement
  if color in colors
    next = colors[color]
    // recursion!
    get_color(next)
  else
    // return value of color
    color

// use your new function!
body {
  background: get_color('site-background');
}



// other styles...
body
  font-size 8vmin
  font-family monospace
  text-align center
  padding 40vmin 2em

  &::after
    content "‘site-background’ == " + get_color('site-background')