pentimento
noun
pen·ti·men·to ˌpen-tə-ˈmen-(ˌ)tō 
plural pentimenti
ˌpen-tə-ˈmen-(ˌ)tē
: a reappearance in a painting of an original drawn or painted element which was eventually painted over by the artist
Example Sentences
Recent Examples on the Web The yellow title casts a grayish shadow within the turquoise, a pentimento whose sign of an earlier paint layer signals a stratum of history. 
Christopher Knight, Los Angeles Times, 1 Sep. 2022 But none of this backstory is explained in the film, which instead comes across as the cinematic equivalent of a pentimento, with the trace of the men’s friendship concealed beneath a conventional documentary form. Richard Brody, The New Yorker, 5 May 2021 Alabama’s flag is a giant crimson X, St. Andrew’s cross, that’s almost a pentimento of the Confederate flag. Karen Heller, Washington Post, 1 July 2019
Christopher Knight, Los Angeles Times, 1 Sep. 2022 But none of this backstory is explained in the film, which instead comes across as the cinematic equivalent of a pentimento, with the trace of the men’s friendship concealed beneath a conventional documentary form. Richard Brody, The New Yorker, 5 May 2021 Alabama’s flag is a giant crimson X, St. Andrew’s cross, that’s almost a pentimento of the Confederate flag. Karen Heller, Washington Post, 1 July 2019 Word History
Etymology
Italian, literally, repentance, correction, from pentire to repent, from Latin paenitēre — more at penitent
First Known Use
1823, in the meaning defined above