NO.　Down and Feather are like human hair and it may contain a very small amount of darker down or feather.　There are no official standards that explicitly describe the tolerance for dark material in a white feather or down.　In the USA a general rule for textile tolerance of 5% is sometimes used.　In Europe a tradition of 2% allowance is sometime used.

Our quality internal standard for white is less than 3% and super white is less than 1% in dark points.