Despite their time on the monument (& the fact that for years, people have perceived them in their pure white form), traces of the original colouring [1] from the sculptures on the Parthenon are still visible.
From:
Athens News Agency [2]
06/14/2011
Traces of the Parthenon’s colourful past(ANA-MPA) — An inset shows traces of mustard-coloured paint on the eponymous Lion’s Head pediment that was removed from the Parthenon’s northeast side on Friday 9 June 2011. The pediment was removed from atop the celebrated Classical Era ancient temple for restoration. The Parthenon was painted in bright colours during antiquity, as were most ancient temples, a far cry from the ubiquitous sun-baked and bare marble columns and friezes usually associated today with the Greco-Roman era. ANA-MPA/ORESTIS PANAGIOTOU