code: private static boolean isLegalNameByte(byte b) {
  		if(b > 31) {
  			if(b < 128) {
  				return b == SP ? false : b != COLON;
  			}
  		}
  		return false;
  	}
docs: any CHAR, excluding CTLs, SPACE, and ":"
  @param b
  @return