code: function flipBorderRadiusValues( values ) {
  		switch ( values.length ) {
  			case 4:
  				values = [ values[ 1 ], values[ 0 ], values[ 3 ], values[ 2 ] ];
  				break;
  			case 3:
  				values = [ values[ 1 ], values[ 0 ], values[ 1 ], values[ 2 ] ];
  				break;
  			case 2:
  				values = [ values[ 1 ], values[ 0 ] ];
  				break;
  			case 1:
  				values = [ values[ 0 ] ];
  				break;
  		}
  
  		return values.join( ' ' );
  	}
docs: Invert a set of border radius values.
  
  @private
  @param {Array} values Matched values
  @return {string} Inverted values