pentimento: Dictionary.com Word of the Day

[Dave Monroe]

pentimento

Painting. the presence oremergence of earlier images,forms, or strokes
that havebeen changed and painted over.

[...]

http://dictionary.reference.com/wordoftheday/2015/06/10/pentimento

arrepentimiento

sm

1    (=pesar)   regret,   (Rel)   repentance
[+de terrorista etc]   reformation
2      (Arte)   (=enmienda)   change   (made by the artist to a picture)

http://dictionary.reverso.net/spanish-english/arrepentimiento
-
Pynchon-l / http://www.waste.org/mail/?list=pynchon-l