Generated by SassMeister.com.

SassMeister-input.scss

// ----
// Sass (v3.3.0.rc.1)
// Compass (v0.13.alpha.10)
// ----

@function f-apply($func, $list, $args...) {
    $new-list: ();
    @each $item in $list {
        $new-list: append($new-list, call($func, $item, $args...));
    }
    @return $new-list;
}

p {
    $colors: red green blue orange;
    colors: $colors;
    lightened-colors: f-apply(lighten, $colors, 10%);
}

SassMeister-output.css

p {
  colors: red green blue orange;
  lightened-colors: #ff3333 #00b300 #3333ff #ffb733;
}