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Father Secchi discusses the possibility of archromatic artifacts (Le Soleil, Volume 1, pages 104-109) and concludes they are real - similar (in his words) to the pink flames seen at the edge of the moon's disk during totality.
There are four or five different illustrations (from 1866) which show the "voiles roses" in different sized sunspots.
I does seem strange that Newcomb's reference work " Popular Astronomy", 1892 nor the Flammarion & Gore "Popular Astronomy" circa 1900 fail to mention this phenomenon.
However, C.A.Young in his definitive "The Sun", 1882, does make mention (p117)
"....there are also fainter veils of a substance less brilliant, but sometimes rose-colored, which seem to float above the umbra."
He doesn't provide any further information or references.
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