Present day material analysis conducted on the two codices supports the timeline depicted in the manuscripts. Researchers in archaeological science detected gypsum and indigo fluorescence that corresponds with the types of dyes used in Mesoamerica, yet later portions of the codices also contained inorganic pigments commonly used in Europe during the second half of the sixteenth century.
Modern-day analysis of the two codices supports the chronology depicted in the manuscripts. Archaeological scientists have found evidence of gypsum and indigo fluorescence that is consistent with dyes used in Mesoamerica, but later sections of the codices also contain pigments typical of European art during the late 16th century.