code: function ( color ) {
              return color.replace( this.REG_RGB, function ( str, r, g, b, a ) {
                  //RGBA문자열도 Hex문자열로 반환, "AARRGGBB"
                  /*
                   var a = (a)? Math.abs(255 * a - 255) : 0,
                   uint = a << 24 | r << 16 | g << 8 | b;
                   */
                  var uint = r << 16 | g << 8 | b;
                  return '#' + $B.string.format( uint.toString(16), 6 );
              });
          }
docs: RGB문자열을 Hex문자열로 반환.
  @param	{String}	color		"rgb(255, 255, 255)" 표기법
  @return	{String}	"#FFFFFF"