The ice cube on f102v

[JustAnotherTheory]

Latest X-ray elemental analysis of folio 1r and 1v, conducted by the Yale team, found no evidence that the pigments are added later.

Which analysis are you referring to?  Not the McCrone report?

The evidence for late coloring is the folio number on page f42r.  According to Rene and another person who looked at that number with a microscope, the green paint is sitting on top of the ink of the number.  And it seems to be established that the folio numbers were written after the bifolios were bound (in the wrong order), a century of more after the text and drawings were made.

All the best, --stolfi

Can it be implied from a single late coloring on f42r, that all colorings were added later? It seems plausible as evidence, but insufficient as proof.