The "green wall curse" in "Três Graças" reflects a historical danger of arsenic-based pigments

extra.globo.com (Portuguese)

A character in "Três Graças" attributes misfortunes to a "green wall curse," a theory with historical roots in toxic arsenic-based pigments. The character repeatedly warns that the green wall in the Ferette mansion brings tragedy, citing personal and observed misfortunes. This superstition is linked to the Victorian era's popular, arsenic-laden green pigments. These vibrant green dyes, used in wallpaper and other items, released toxic vapors, causing illness and death. The danger was particularly acute in humid conditions or with degrading materials.


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