@function color($color, $type) {
  @if map-has-key($colors, $color) {
    $curr_color: map-get($colors, $color);
    @if map-has-key($curr_color, $type) {
      @return map-get($curr_color, $type);
    }
  }
  @warn "Unknown `#{$color}` - `#{$type}` in $colors.";
  @return null;
}