/// Provides a quick method for targeting `border-color` on specific sides of a box. Use a `null` value to “skip” a side.
///
/// @param {Arglist} $vals
///   List of arguments
///
/// @example scss - Usage
///   .element {
///     @include border-color(#a60b55 #76cd9c null #e8ae1a);
///   }
///
/// @example css - CSS Output
///   .element {
///     border-left-color: #e8ae1a;
///     border-right-color: #76cd9c;
///     border-top-color: #a60b55;
///   }
///
/// @require {mixin} directional-property
///
/// @output `border-color`

@mixin border-color($vals...) {
  $user-deprecation-warnings-setting: $output-bourbon-deprecation-warnings;
  $output-bourbon-deprecation-warnings: false !global;
  @include directional-property(border, color, $vals...);
  $output-bourbon-deprecation-warnings: $user-deprecation-warnings-setting !global;
}
