@function stripes($list) {
  $value : ();
  @for $i from 1 through length($list) {
    $color : nth($list, $i);
    $start : 100% / length($list) * ($i - 1);
    $end : 100% / length($list) * $i;
    $rampSegment : $color $start, $color $end;
    $value : append($value, $rampSegment, comma);
  }
  @return linear-gradient($value);
}

/*
EXMAPLE:
section {
  background-image: stripes(red, green, blue);
}

OUTPUT:
background-image: linear-gradient(red 0%, red 33.33333%, green 33.33333%, green 66.66667%, blue 66.66667%, blue 100%);

*/