Appearance Issues with TE's Get 0.64 Female Terminals

Sometimes you may discover that some of the plating surfaces on TE’s Get 0.64 Female Terminals appear to be blackened on the surface and look like they are oxidized.

For example, part number 2-1393366-2.
For reference, check this photo:

TE confirms that these are considered acceptable. The drawing does indicate that tarnish is acceptable on the silver version:
image

Applicable part numbers

17-1719958-1TR-ND,17-1719958-1CT-ND
A128313-ND
1393364-1-ND
A128314-ND
17-1719957-1TR-ND
17-2-1393366-2TR-ND,17-2-1393366-2CT-ND
17-1564880-1-ND
17-1924782-3TR-ND

1719958-1
1924879-1
1393364-1
1924880-1
1719957-1
2-1393366-2
1564880-1
1924782-3