Powerful Stylus mixin to create 3D text

three-dee-text.stylus

three-dee-text($color = baseColor, $size = 7, $strength = 5%, $shadowing = .3)
  $size = unit($size, '')
  $text-shadow = '0 0 0 ' + rgba($color)
  color $color
  for n in 1..$size
    $color = darken($color, $strength)
    push($text-shadow, 0 unit(n, 'px') 0 $color)

  push($text-shadow, 0 unit(n+1, 'px') unit(n - 1, 'px') rgba(0,0,0,$shadowing))
  push($text-shadow, 0 unit(n+1, 'px') 1px rgba(0,0,0,.5))

  text-shadow unquote(join(', ', $text-shadow))